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fs/9p: Make the writeback_fid owned by root
[deliverable/linux.git] / drivers / scsi / ipr.c
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/ioport.h>
64 #include <linux/delay.h>
65 #include <linux/pci.h>
66 #include <linux/wait.h>
67 #include <linux/spinlock.h>
68 #include <linux/sched.h>
69 #include <linux/interrupt.h>
70 #include <linux/blkdev.h>
71 #include <linux/firmware.h>
72 #include <linux/module.h>
73 #include <linux/moduleparam.h>
74 #include <linux/libata.h>
75 #include <linux/hdreg.h>
76 #include <linux/reboot.h>
77 #include <linux/stringify.h>
78 #include <asm/io.h>
79 #include <asm/irq.h>
80 #include <asm/processor.h>
81 #include <scsi/scsi.h>
82 #include <scsi/scsi_host.h>
83 #include <scsi/scsi_tcq.h>
84 #include <scsi/scsi_eh.h>
85 #include <scsi/scsi_cmnd.h>
86 #include "ipr.h"
87
88 /*
89 * Global Data
90 */
91 static LIST_HEAD(ipr_ioa_head);
92 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
93 static unsigned int ipr_max_speed = 1;
94 static int ipr_testmode = 0;
95 static unsigned int ipr_fastfail = 0;
96 static unsigned int ipr_transop_timeout = 0;
97 static unsigned int ipr_debug = 0;
98 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
99 static unsigned int ipr_dual_ioa_raid = 1;
100 static DEFINE_SPINLOCK(ipr_driver_lock);
101
102 /* This table describes the differences between DMA controller chips */
103 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
104 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
105 .mailbox = 0x0042C,
106 .cache_line_size = 0x20,
107 {
108 .set_interrupt_mask_reg = 0x0022C,
109 .clr_interrupt_mask_reg = 0x00230,
110 .clr_interrupt_mask_reg32 = 0x00230,
111 .sense_interrupt_mask_reg = 0x0022C,
112 .sense_interrupt_mask_reg32 = 0x0022C,
113 .clr_interrupt_reg = 0x00228,
114 .clr_interrupt_reg32 = 0x00228,
115 .sense_interrupt_reg = 0x00224,
116 .sense_interrupt_reg32 = 0x00224,
117 .ioarrin_reg = 0x00404,
118 .sense_uproc_interrupt_reg = 0x00214,
119 .sense_uproc_interrupt_reg32 = 0x00214,
120 .set_uproc_interrupt_reg = 0x00214,
121 .set_uproc_interrupt_reg32 = 0x00214,
122 .clr_uproc_interrupt_reg = 0x00218,
123 .clr_uproc_interrupt_reg32 = 0x00218
124 }
125 },
126 { /* Snipe and Scamp */
127 .mailbox = 0x0052C,
128 .cache_line_size = 0x20,
129 {
130 .set_interrupt_mask_reg = 0x00288,
131 .clr_interrupt_mask_reg = 0x0028C,
132 .clr_interrupt_mask_reg32 = 0x0028C,
133 .sense_interrupt_mask_reg = 0x00288,
134 .sense_interrupt_mask_reg32 = 0x00288,
135 .clr_interrupt_reg = 0x00284,
136 .clr_interrupt_reg32 = 0x00284,
137 .sense_interrupt_reg = 0x00280,
138 .sense_interrupt_reg32 = 0x00280,
139 .ioarrin_reg = 0x00504,
140 .sense_uproc_interrupt_reg = 0x00290,
141 .sense_uproc_interrupt_reg32 = 0x00290,
142 .set_uproc_interrupt_reg = 0x00290,
143 .set_uproc_interrupt_reg32 = 0x00290,
144 .clr_uproc_interrupt_reg = 0x00294,
145 .clr_uproc_interrupt_reg32 = 0x00294
146 }
147 },
148 { /* CRoC */
149 .mailbox = 0x00044,
150 .cache_line_size = 0x20,
151 {
152 .set_interrupt_mask_reg = 0x00010,
153 .clr_interrupt_mask_reg = 0x00018,
154 .clr_interrupt_mask_reg32 = 0x0001C,
155 .sense_interrupt_mask_reg = 0x00010,
156 .sense_interrupt_mask_reg32 = 0x00014,
157 .clr_interrupt_reg = 0x00008,
158 .clr_interrupt_reg32 = 0x0000C,
159 .sense_interrupt_reg = 0x00000,
160 .sense_interrupt_reg32 = 0x00004,
161 .ioarrin_reg = 0x00070,
162 .sense_uproc_interrupt_reg = 0x00020,
163 .sense_uproc_interrupt_reg32 = 0x00024,
164 .set_uproc_interrupt_reg = 0x00020,
165 .set_uproc_interrupt_reg32 = 0x00024,
166 .clr_uproc_interrupt_reg = 0x00028,
167 .clr_uproc_interrupt_reg32 = 0x0002C,
168 .init_feedback_reg = 0x0005C,
169 .dump_addr_reg = 0x00064,
170 .dump_data_reg = 0x00068,
171 .endian_swap_reg = 0x00084
172 }
173 },
174 };
175
176 static const struct ipr_chip_t ipr_chip[] = {
177 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
178 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
179 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
183 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
186 };
187
188 static int ipr_max_bus_speeds [] = {
189 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
190 };
191
192 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
193 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
194 module_param_named(max_speed, ipr_max_speed, uint, 0);
195 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
196 module_param_named(log_level, ipr_log_level, uint, 0);
197 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
198 module_param_named(testmode, ipr_testmode, int, 0);
199 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
200 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
201 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
202 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
203 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
204 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
205 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
206 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
207 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
208 module_param_named(max_devs, ipr_max_devs, int, 0);
209 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
210 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
211 MODULE_LICENSE("GPL");
212 MODULE_VERSION(IPR_DRIVER_VERSION);
213
214 /* A constant array of IOASCs/URCs/Error Messages */
215 static const
216 struct ipr_error_table_t ipr_error_table[] = {
217 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
218 "8155: An unknown error was received"},
219 {0x00330000, 0, 0,
220 "Soft underlength error"},
221 {0x005A0000, 0, 0,
222 "Command to be cancelled not found"},
223 {0x00808000, 0, 0,
224 "Qualified success"},
225 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
226 "FFFE: Soft device bus error recovered by the IOA"},
227 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
228 "4101: Soft device bus fabric error"},
229 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
230 "FFFC: Logical block guard error recovered by the device"},
231 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
232 "FFFC: Logical block reference tag error recovered by the device"},
233 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
234 "4171: Recovered scatter list tag / sequence number error"},
235 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
236 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
237 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
238 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
239 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
240 "FFFD: Recovered logical block reference tag error detected by the IOA"},
241 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
242 "FFFD: Logical block guard error recovered by the IOA"},
243 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
244 "FFF9: Device sector reassign successful"},
245 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
246 "FFF7: Media error recovered by device rewrite procedures"},
247 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
248 "7001: IOA sector reassignment successful"},
249 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
250 "FFF9: Soft media error. Sector reassignment recommended"},
251 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
252 "FFF7: Media error recovered by IOA rewrite procedures"},
253 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
254 "FF3D: Soft PCI bus error recovered by the IOA"},
255 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
256 "FFF6: Device hardware error recovered by the IOA"},
257 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
258 "FFF6: Device hardware error recovered by the device"},
259 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
260 "FF3D: Soft IOA error recovered by the IOA"},
261 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
262 "FFFA: Undefined device response recovered by the IOA"},
263 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
264 "FFF6: Device bus error, message or command phase"},
265 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
266 "FFFE: Task Management Function failed"},
267 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
268 "FFF6: Failure prediction threshold exceeded"},
269 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
270 "8009: Impending cache battery pack failure"},
271 {0x02040400, 0, 0,
272 "34FF: Disk device format in progress"},
273 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
274 "9070: IOA requested reset"},
275 {0x023F0000, 0, 0,
276 "Synchronization required"},
277 {0x024E0000, 0, 0,
278 "No ready, IOA shutdown"},
279 {0x025A0000, 0, 0,
280 "Not ready, IOA has been shutdown"},
281 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
282 "3020: Storage subsystem configuration error"},
283 {0x03110B00, 0, 0,
284 "FFF5: Medium error, data unreadable, recommend reassign"},
285 {0x03110C00, 0, 0,
286 "7000: Medium error, data unreadable, do not reassign"},
287 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
288 "FFF3: Disk media format bad"},
289 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
290 "3002: Addressed device failed to respond to selection"},
291 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
292 "3100: Device bus error"},
293 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
294 "3109: IOA timed out a device command"},
295 {0x04088000, 0, 0,
296 "3120: SCSI bus is not operational"},
297 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
298 "4100: Hard device bus fabric error"},
299 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
300 "310C: Logical block guard error detected by the device"},
301 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
302 "310C: Logical block reference tag error detected by the device"},
303 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
304 "4170: Scatter list tag / sequence number error"},
305 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
306 "8150: Logical block CRC error on IOA to Host transfer"},
307 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
308 "4170: Logical block sequence number error on IOA to Host transfer"},
309 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
310 "310D: Logical block reference tag error detected by the IOA"},
311 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
312 "310D: Logical block guard error detected by the IOA"},
313 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
314 "9000: IOA reserved area data check"},
315 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
316 "9001: IOA reserved area invalid data pattern"},
317 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
318 "9002: IOA reserved area LRC error"},
319 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
320 "Hardware Error, IOA metadata access error"},
321 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
322 "102E: Out of alternate sectors for disk storage"},
323 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
324 "FFF4: Data transfer underlength error"},
325 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
326 "FFF4: Data transfer overlength error"},
327 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
328 "3400: Logical unit failure"},
329 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
330 "FFF4: Device microcode is corrupt"},
331 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
332 "8150: PCI bus error"},
333 {0x04430000, 1, 0,
334 "Unsupported device bus message received"},
335 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
336 "FFF4: Disk device problem"},
337 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
338 "8150: Permanent IOA failure"},
339 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
340 "3010: Disk device returned wrong response to IOA"},
341 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
342 "8151: IOA microcode error"},
343 {0x04448500, 0, 0,
344 "Device bus status error"},
345 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
346 "8157: IOA error requiring IOA reset to recover"},
347 {0x04448700, 0, 0,
348 "ATA device status error"},
349 {0x04490000, 0, 0,
350 "Message reject received from the device"},
351 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
352 "8008: A permanent cache battery pack failure occurred"},
353 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
354 "9090: Disk unit has been modified after the last known status"},
355 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
356 "9081: IOA detected device error"},
357 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
358 "9082: IOA detected device error"},
359 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
360 "3110: Device bus error, message or command phase"},
361 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
362 "3110: SAS Command / Task Management Function failed"},
363 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
364 "9091: Incorrect hardware configuration change has been detected"},
365 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
366 "9073: Invalid multi-adapter configuration"},
367 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
368 "4010: Incorrect connection between cascaded expanders"},
369 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
370 "4020: Connections exceed IOA design limits"},
371 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
372 "4030: Incorrect multipath connection"},
373 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
374 "4110: Unsupported enclosure function"},
375 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
376 "FFF4: Command to logical unit failed"},
377 {0x05240000, 1, 0,
378 "Illegal request, invalid request type or request packet"},
379 {0x05250000, 0, 0,
380 "Illegal request, invalid resource handle"},
381 {0x05258000, 0, 0,
382 "Illegal request, commands not allowed to this device"},
383 {0x05258100, 0, 0,
384 "Illegal request, command not allowed to a secondary adapter"},
385 {0x05258200, 0, 0,
386 "Illegal request, command not allowed to a non-optimized resource"},
387 {0x05260000, 0, 0,
388 "Illegal request, invalid field in parameter list"},
389 {0x05260100, 0, 0,
390 "Illegal request, parameter not supported"},
391 {0x05260200, 0, 0,
392 "Illegal request, parameter value invalid"},
393 {0x052C0000, 0, 0,
394 "Illegal request, command sequence error"},
395 {0x052C8000, 1, 0,
396 "Illegal request, dual adapter support not enabled"},
397 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
398 "9031: Array protection temporarily suspended, protection resuming"},
399 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
400 "9040: Array protection temporarily suspended, protection resuming"},
401 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
402 "3140: Device bus not ready to ready transition"},
403 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
404 "FFFB: SCSI bus was reset"},
405 {0x06290500, 0, 0,
406 "FFFE: SCSI bus transition to single ended"},
407 {0x06290600, 0, 0,
408 "FFFE: SCSI bus transition to LVD"},
409 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
410 "FFFB: SCSI bus was reset by another initiator"},
411 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
412 "3029: A device replacement has occurred"},
413 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
414 "9051: IOA cache data exists for a missing or failed device"},
415 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
416 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
417 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
418 "9025: Disk unit is not supported at its physical location"},
419 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
420 "3020: IOA detected a SCSI bus configuration error"},
421 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
422 "3150: SCSI bus configuration error"},
423 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
424 "9074: Asymmetric advanced function disk configuration"},
425 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
426 "4040: Incomplete multipath connection between IOA and enclosure"},
427 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
428 "4041: Incomplete multipath connection between enclosure and device"},
429 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
430 "9075: Incomplete multipath connection between IOA and remote IOA"},
431 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
432 "9076: Configuration error, missing remote IOA"},
433 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
434 "4050: Enclosure does not support a required multipath function"},
435 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
436 "4070: Logically bad block written on device"},
437 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
438 "9041: Array protection temporarily suspended"},
439 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
440 "9042: Corrupt array parity detected on specified device"},
441 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
442 "9030: Array no longer protected due to missing or failed disk unit"},
443 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
444 "9071: Link operational transition"},
445 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
446 "9072: Link not operational transition"},
447 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
448 "9032: Array exposed but still protected"},
449 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
450 "70DD: Device forced failed by disrupt device command"},
451 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
452 "4061: Multipath redundancy level got better"},
453 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
454 "4060: Multipath redundancy level got worse"},
455 {0x07270000, 0, 0,
456 "Failure due to other device"},
457 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
458 "9008: IOA does not support functions expected by devices"},
459 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
460 "9010: Cache data associated with attached devices cannot be found"},
461 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
462 "9011: Cache data belongs to devices other than those attached"},
463 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
464 "9020: Array missing 2 or more devices with only 1 device present"},
465 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
466 "9021: Array missing 2 or more devices with 2 or more devices present"},
467 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
468 "9022: Exposed array is missing a required device"},
469 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
470 "9023: Array member(s) not at required physical locations"},
471 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
472 "9024: Array not functional due to present hardware configuration"},
473 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
474 "9026: Array not functional due to present hardware configuration"},
475 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
476 "9027: Array is missing a device and parity is out of sync"},
477 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
478 "9028: Maximum number of arrays already exist"},
479 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
480 "9050: Required cache data cannot be located for a disk unit"},
481 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
482 "9052: Cache data exists for a device that has been modified"},
483 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
484 "9054: IOA resources not available due to previous problems"},
485 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
486 "9092: Disk unit requires initialization before use"},
487 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
488 "9029: Incorrect hardware configuration change has been detected"},
489 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
490 "9060: One or more disk pairs are missing from an array"},
491 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
492 "9061: One or more disks are missing from an array"},
493 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
494 "9062: One or more disks are missing from an array"},
495 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
496 "9063: Maximum number of functional arrays has been exceeded"},
497 {0x0B260000, 0, 0,
498 "Aborted command, invalid descriptor"},
499 {0x0B5A0000, 0, 0,
500 "Command terminated by host"}
501 };
502
503 static const struct ipr_ses_table_entry ipr_ses_table[] = {
504 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
505 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
506 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
507 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
508 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
509 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
510 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
511 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
512 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
513 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
514 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
515 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
516 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
517 };
518
519 /*
520 * Function Prototypes
521 */
522 static int ipr_reset_alert(struct ipr_cmnd *);
523 static void ipr_process_ccn(struct ipr_cmnd *);
524 static void ipr_process_error(struct ipr_cmnd *);
525 static void ipr_reset_ioa_job(struct ipr_cmnd *);
526 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
527 enum ipr_shutdown_type);
528
529 #ifdef CONFIG_SCSI_IPR_TRACE
530 /**
531 * ipr_trc_hook - Add a trace entry to the driver trace
532 * @ipr_cmd: ipr command struct
533 * @type: trace type
534 * @add_data: additional data
535 *
536 * Return value:
537 * none
538 **/
539 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
540 u8 type, u32 add_data)
541 {
542 struct ipr_trace_entry *trace_entry;
543 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
544
545 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
546 trace_entry->time = jiffies;
547 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
548 trace_entry->type = type;
549 if (ipr_cmd->ioa_cfg->sis64)
550 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
551 else
552 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
553 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
554 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
555 trace_entry->u.add_data = add_data;
556 }
557 #else
558 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
559 #endif
560
561 /**
562 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
563 * @ipr_cmd: ipr command struct
564 *
565 * Return value:
566 * none
567 **/
568 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
569 {
570 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
571 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
572 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
573 dma_addr_t dma_addr = ipr_cmd->dma_addr;
574
575 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
576 ioarcb->data_transfer_length = 0;
577 ioarcb->read_data_transfer_length = 0;
578 ioarcb->ioadl_len = 0;
579 ioarcb->read_ioadl_len = 0;
580
581 if (ipr_cmd->ioa_cfg->sis64) {
582 ioarcb->u.sis64_addr_data.data_ioadl_addr =
583 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
584 ioasa64->u.gata.status = 0;
585 } else {
586 ioarcb->write_ioadl_addr =
587 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
588 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
589 ioasa->u.gata.status = 0;
590 }
591
592 ioasa->hdr.ioasc = 0;
593 ioasa->hdr.residual_data_len = 0;
594 ipr_cmd->scsi_cmd = NULL;
595 ipr_cmd->qc = NULL;
596 ipr_cmd->sense_buffer[0] = 0;
597 ipr_cmd->dma_use_sg = 0;
598 }
599
600 /**
601 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
602 * @ipr_cmd: ipr command struct
603 *
604 * Return value:
605 * none
606 **/
607 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
608 {
609 ipr_reinit_ipr_cmnd(ipr_cmd);
610 ipr_cmd->u.scratch = 0;
611 ipr_cmd->sibling = NULL;
612 init_timer(&ipr_cmd->timer);
613 }
614
615 /**
616 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
617 * @ioa_cfg: ioa config struct
618 *
619 * Return value:
620 * pointer to ipr command struct
621 **/
622 static
623 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
624 {
625 struct ipr_cmnd *ipr_cmd;
626
627 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
628 list_del(&ipr_cmd->queue);
629 ipr_init_ipr_cmnd(ipr_cmd);
630
631 return ipr_cmd;
632 }
633
634 /**
635 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
636 * @ioa_cfg: ioa config struct
637 * @clr_ints: interrupts to clear
638 *
639 * This function masks all interrupts on the adapter, then clears the
640 * interrupts specified in the mask
641 *
642 * Return value:
643 * none
644 **/
645 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
646 u32 clr_ints)
647 {
648 volatile u32 int_reg;
649
650 /* Stop new interrupts */
651 ioa_cfg->allow_interrupts = 0;
652
653 /* Set interrupt mask to stop all new interrupts */
654 if (ioa_cfg->sis64)
655 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
656 else
657 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
658
659 /* Clear any pending interrupts */
660 if (ioa_cfg->sis64)
661 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
662 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
663 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
664 }
665
666 /**
667 * ipr_save_pcix_cmd_reg - Save PCI-X command register
668 * @ioa_cfg: ioa config struct
669 *
670 * Return value:
671 * 0 on success / -EIO on failure
672 **/
673 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
674 {
675 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
676
677 if (pcix_cmd_reg == 0)
678 return 0;
679
680 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
681 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
682 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
683 return -EIO;
684 }
685
686 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
687 return 0;
688 }
689
690 /**
691 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
692 * @ioa_cfg: ioa config struct
693 *
694 * Return value:
695 * 0 on success / -EIO on failure
696 **/
697 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
698 {
699 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
700
701 if (pcix_cmd_reg) {
702 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
703 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
704 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
705 return -EIO;
706 }
707 }
708
709 return 0;
710 }
711
712 /**
713 * ipr_sata_eh_done - done function for aborted SATA commands
714 * @ipr_cmd: ipr command struct
715 *
716 * This function is invoked for ops generated to SATA
717 * devices which are being aborted.
718 *
719 * Return value:
720 * none
721 **/
722 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
723 {
724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
725 struct ata_queued_cmd *qc = ipr_cmd->qc;
726 struct ipr_sata_port *sata_port = qc->ap->private_data;
727
728 qc->err_mask |= AC_ERR_OTHER;
729 sata_port->ioasa.status |= ATA_BUSY;
730 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
731 ata_qc_complete(qc);
732 }
733
734 /**
735 * ipr_scsi_eh_done - mid-layer done function for aborted ops
736 * @ipr_cmd: ipr command struct
737 *
738 * This function is invoked by the interrupt handler for
739 * ops generated by the SCSI mid-layer which are being aborted.
740 *
741 * Return value:
742 * none
743 **/
744 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
745 {
746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
748
749 scsi_cmd->result |= (DID_ERROR << 16);
750
751 scsi_dma_unmap(ipr_cmd->scsi_cmd);
752 scsi_cmd->scsi_done(scsi_cmd);
753 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
754 }
755
756 /**
757 * ipr_fail_all_ops - Fails all outstanding ops.
758 * @ioa_cfg: ioa config struct
759 *
760 * This function fails all outstanding ops.
761 *
762 * Return value:
763 * none
764 **/
765 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
766 {
767 struct ipr_cmnd *ipr_cmd, *temp;
768
769 ENTER;
770 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
771 list_del(&ipr_cmd->queue);
772
773 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
774 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID);
775
776 if (ipr_cmd->scsi_cmd)
777 ipr_cmd->done = ipr_scsi_eh_done;
778 else if (ipr_cmd->qc)
779 ipr_cmd->done = ipr_sata_eh_done;
780
781 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
782 del_timer(&ipr_cmd->timer);
783 ipr_cmd->done(ipr_cmd);
784 }
785
786 LEAVE;
787 }
788
789 /**
790 * ipr_send_command - Send driver initiated requests.
791 * @ipr_cmd: ipr command struct
792 *
793 * This function sends a command to the adapter using the correct write call.
794 * In the case of sis64, calculate the ioarcb size required. Then or in the
795 * appropriate bits.
796 *
797 * Return value:
798 * none
799 **/
800 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
801 {
802 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
803 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
804
805 if (ioa_cfg->sis64) {
806 /* The default size is 256 bytes */
807 send_dma_addr |= 0x1;
808
809 /* If the number of ioadls * size of ioadl > 128 bytes,
810 then use a 512 byte ioarcb */
811 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
812 send_dma_addr |= 0x4;
813 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
814 } else
815 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
816 }
817
818 /**
819 * ipr_do_req - Send driver initiated requests.
820 * @ipr_cmd: ipr command struct
821 * @done: done function
822 * @timeout_func: timeout function
823 * @timeout: timeout value
824 *
825 * This function sends the specified command to the adapter with the
826 * timeout given. The done function is invoked on command completion.
827 *
828 * Return value:
829 * none
830 **/
831 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
832 void (*done) (struct ipr_cmnd *),
833 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
834 {
835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
836
837 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
838
839 ipr_cmd->done = done;
840
841 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
842 ipr_cmd->timer.expires = jiffies + timeout;
843 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
844
845 add_timer(&ipr_cmd->timer);
846
847 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
848
849 mb();
850
851 ipr_send_command(ipr_cmd);
852 }
853
854 /**
855 * ipr_internal_cmd_done - Op done function for an internally generated op.
856 * @ipr_cmd: ipr command struct
857 *
858 * This function is the op done function for an internally generated,
859 * blocking op. It simply wakes the sleeping thread.
860 *
861 * Return value:
862 * none
863 **/
864 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
865 {
866 if (ipr_cmd->sibling)
867 ipr_cmd->sibling = NULL;
868 else
869 complete(&ipr_cmd->completion);
870 }
871
872 /**
873 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
874 * @ipr_cmd: ipr command struct
875 * @dma_addr: dma address
876 * @len: transfer length
877 * @flags: ioadl flag value
878 *
879 * This function initializes an ioadl in the case where there is only a single
880 * descriptor.
881 *
882 * Return value:
883 * nothing
884 **/
885 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
886 u32 len, int flags)
887 {
888 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
889 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
890
891 ipr_cmd->dma_use_sg = 1;
892
893 if (ipr_cmd->ioa_cfg->sis64) {
894 ioadl64->flags = cpu_to_be32(flags);
895 ioadl64->data_len = cpu_to_be32(len);
896 ioadl64->address = cpu_to_be64(dma_addr);
897
898 ipr_cmd->ioarcb.ioadl_len =
899 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
900 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
901 } else {
902 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
903 ioadl->address = cpu_to_be32(dma_addr);
904
905 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
906 ipr_cmd->ioarcb.read_ioadl_len =
907 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
908 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
909 } else {
910 ipr_cmd->ioarcb.ioadl_len =
911 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
912 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
913 }
914 }
915 }
916
917 /**
918 * ipr_send_blocking_cmd - Send command and sleep on its completion.
919 * @ipr_cmd: ipr command struct
920 * @timeout_func: function to invoke if command times out
921 * @timeout: timeout
922 *
923 * Return value:
924 * none
925 **/
926 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
927 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
928 u32 timeout)
929 {
930 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
931
932 init_completion(&ipr_cmd->completion);
933 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
934
935 spin_unlock_irq(ioa_cfg->host->host_lock);
936 wait_for_completion(&ipr_cmd->completion);
937 spin_lock_irq(ioa_cfg->host->host_lock);
938 }
939
940 /**
941 * ipr_send_hcam - Send an HCAM to the adapter.
942 * @ioa_cfg: ioa config struct
943 * @type: HCAM type
944 * @hostrcb: hostrcb struct
945 *
946 * This function will send a Host Controlled Async command to the adapter.
947 * If HCAMs are currently not allowed to be issued to the adapter, it will
948 * place the hostrcb on the free queue.
949 *
950 * Return value:
951 * none
952 **/
953 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
954 struct ipr_hostrcb *hostrcb)
955 {
956 struct ipr_cmnd *ipr_cmd;
957 struct ipr_ioarcb *ioarcb;
958
959 if (ioa_cfg->allow_cmds) {
960 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
961 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
962 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
963
964 ipr_cmd->u.hostrcb = hostrcb;
965 ioarcb = &ipr_cmd->ioarcb;
966
967 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
968 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
969 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
970 ioarcb->cmd_pkt.cdb[1] = type;
971 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
972 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
973
974 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
975 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
976
977 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
978 ipr_cmd->done = ipr_process_ccn;
979 else
980 ipr_cmd->done = ipr_process_error;
981
982 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
983
984 mb();
985
986 ipr_send_command(ipr_cmd);
987 } else {
988 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
989 }
990 }
991
992 /**
993 * ipr_update_ata_class - Update the ata class in the resource entry
994 * @res: resource entry struct
995 * @proto: cfgte device bus protocol value
996 *
997 * Return value:
998 * none
999 **/
1000 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1001 {
1002 switch(proto) {
1003 case IPR_PROTO_SATA:
1004 case IPR_PROTO_SAS_STP:
1005 res->ata_class = ATA_DEV_ATA;
1006 break;
1007 case IPR_PROTO_SATA_ATAPI:
1008 case IPR_PROTO_SAS_STP_ATAPI:
1009 res->ata_class = ATA_DEV_ATAPI;
1010 break;
1011 default:
1012 res->ata_class = ATA_DEV_UNKNOWN;
1013 break;
1014 };
1015 }
1016
1017 /**
1018 * ipr_init_res_entry - Initialize a resource entry struct.
1019 * @res: resource entry struct
1020 * @cfgtew: config table entry wrapper struct
1021 *
1022 * Return value:
1023 * none
1024 **/
1025 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1026 struct ipr_config_table_entry_wrapper *cfgtew)
1027 {
1028 int found = 0;
1029 unsigned int proto;
1030 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1031 struct ipr_resource_entry *gscsi_res = NULL;
1032
1033 res->needs_sync_complete = 0;
1034 res->in_erp = 0;
1035 res->add_to_ml = 0;
1036 res->del_from_ml = 0;
1037 res->resetting_device = 0;
1038 res->sdev = NULL;
1039 res->sata_port = NULL;
1040
1041 if (ioa_cfg->sis64) {
1042 proto = cfgtew->u.cfgte64->proto;
1043 res->res_flags = cfgtew->u.cfgte64->res_flags;
1044 res->qmodel = IPR_QUEUEING_MODEL64(res);
1045 res->type = cfgtew->u.cfgte64->res_type;
1046
1047 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1048 sizeof(res->res_path));
1049
1050 res->bus = 0;
1051 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1052 sizeof(res->dev_lun.scsi_lun));
1053 res->lun = scsilun_to_int(&res->dev_lun);
1054
1055 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1056 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1057 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1058 found = 1;
1059 res->target = gscsi_res->target;
1060 break;
1061 }
1062 }
1063 if (!found) {
1064 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1065 ioa_cfg->max_devs_supported);
1066 set_bit(res->target, ioa_cfg->target_ids);
1067 }
1068 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1069 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1070 res->target = 0;
1071 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1072 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1073 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1074 ioa_cfg->max_devs_supported);
1075 set_bit(res->target, ioa_cfg->array_ids);
1076 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1077 res->bus = IPR_VSET_VIRTUAL_BUS;
1078 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1079 ioa_cfg->max_devs_supported);
1080 set_bit(res->target, ioa_cfg->vset_ids);
1081 } else {
1082 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1083 ioa_cfg->max_devs_supported);
1084 set_bit(res->target, ioa_cfg->target_ids);
1085 }
1086 } else {
1087 proto = cfgtew->u.cfgte->proto;
1088 res->qmodel = IPR_QUEUEING_MODEL(res);
1089 res->flags = cfgtew->u.cfgte->flags;
1090 if (res->flags & IPR_IS_IOA_RESOURCE)
1091 res->type = IPR_RES_TYPE_IOAFP;
1092 else
1093 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1094
1095 res->bus = cfgtew->u.cfgte->res_addr.bus;
1096 res->target = cfgtew->u.cfgte->res_addr.target;
1097 res->lun = cfgtew->u.cfgte->res_addr.lun;
1098 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1099 }
1100
1101 ipr_update_ata_class(res, proto);
1102 }
1103
1104 /**
1105 * ipr_is_same_device - Determine if two devices are the same.
1106 * @res: resource entry struct
1107 * @cfgtew: config table entry wrapper struct
1108 *
1109 * Return value:
1110 * 1 if the devices are the same / 0 otherwise
1111 **/
1112 static int ipr_is_same_device(struct ipr_resource_entry *res,
1113 struct ipr_config_table_entry_wrapper *cfgtew)
1114 {
1115 if (res->ioa_cfg->sis64) {
1116 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1117 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1118 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1119 sizeof(cfgtew->u.cfgte64->lun))) {
1120 return 1;
1121 }
1122 } else {
1123 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1124 res->target == cfgtew->u.cfgte->res_addr.target &&
1125 res->lun == cfgtew->u.cfgte->res_addr.lun)
1126 return 1;
1127 }
1128
1129 return 0;
1130 }
1131
1132 /**
1133 * ipr_format_res_path - Format the resource path for printing.
1134 * @res_path: resource path
1135 * @buf: buffer
1136 *
1137 * Return value:
1138 * pointer to buffer
1139 **/
1140 static char *ipr_format_res_path(u8 *res_path, char *buffer, int len)
1141 {
1142 int i;
1143 char *p = buffer;
1144
1145 *p = '\0';
1146 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1147 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1148 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1149
1150 return buffer;
1151 }
1152
1153 /**
1154 * ipr_update_res_entry - Update the resource entry.
1155 * @res: resource entry struct
1156 * @cfgtew: config table entry wrapper struct
1157 *
1158 * Return value:
1159 * none
1160 **/
1161 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1162 struct ipr_config_table_entry_wrapper *cfgtew)
1163 {
1164 char buffer[IPR_MAX_RES_PATH_LENGTH];
1165 unsigned int proto;
1166 int new_path = 0;
1167
1168 if (res->ioa_cfg->sis64) {
1169 res->flags = cfgtew->u.cfgte64->flags;
1170 res->res_flags = cfgtew->u.cfgte64->res_flags;
1171 res->type = cfgtew->u.cfgte64->res_type;
1172
1173 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1174 sizeof(struct ipr_std_inq_data));
1175
1176 res->qmodel = IPR_QUEUEING_MODEL64(res);
1177 proto = cfgtew->u.cfgte64->proto;
1178 res->res_handle = cfgtew->u.cfgte64->res_handle;
1179 res->dev_id = cfgtew->u.cfgte64->dev_id;
1180
1181 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1182 sizeof(res->dev_lun.scsi_lun));
1183
1184 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1185 sizeof(res->res_path))) {
1186 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1187 sizeof(res->res_path));
1188 new_path = 1;
1189 }
1190
1191 if (res->sdev && new_path)
1192 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1193 ipr_format_res_path(res->res_path, buffer,
1194 sizeof(buffer)));
1195 } else {
1196 res->flags = cfgtew->u.cfgte->flags;
1197 if (res->flags & IPR_IS_IOA_RESOURCE)
1198 res->type = IPR_RES_TYPE_IOAFP;
1199 else
1200 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1201
1202 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1203 sizeof(struct ipr_std_inq_data));
1204
1205 res->qmodel = IPR_QUEUEING_MODEL(res);
1206 proto = cfgtew->u.cfgte->proto;
1207 res->res_handle = cfgtew->u.cfgte->res_handle;
1208 }
1209
1210 ipr_update_ata_class(res, proto);
1211 }
1212
1213 /**
1214 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1215 * for the resource.
1216 * @res: resource entry struct
1217 * @cfgtew: config table entry wrapper struct
1218 *
1219 * Return value:
1220 * none
1221 **/
1222 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1223 {
1224 struct ipr_resource_entry *gscsi_res = NULL;
1225 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1226
1227 if (!ioa_cfg->sis64)
1228 return;
1229
1230 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1231 clear_bit(res->target, ioa_cfg->array_ids);
1232 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1233 clear_bit(res->target, ioa_cfg->vset_ids);
1234 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1235 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1236 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1237 return;
1238 clear_bit(res->target, ioa_cfg->target_ids);
1239
1240 } else if (res->bus == 0)
1241 clear_bit(res->target, ioa_cfg->target_ids);
1242 }
1243
1244 /**
1245 * ipr_handle_config_change - Handle a config change from the adapter
1246 * @ioa_cfg: ioa config struct
1247 * @hostrcb: hostrcb
1248 *
1249 * Return value:
1250 * none
1251 **/
1252 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1253 struct ipr_hostrcb *hostrcb)
1254 {
1255 struct ipr_resource_entry *res = NULL;
1256 struct ipr_config_table_entry_wrapper cfgtew;
1257 __be32 cc_res_handle;
1258
1259 u32 is_ndn = 1;
1260
1261 if (ioa_cfg->sis64) {
1262 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1263 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1264 } else {
1265 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1266 cc_res_handle = cfgtew.u.cfgte->res_handle;
1267 }
1268
1269 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1270 if (res->res_handle == cc_res_handle) {
1271 is_ndn = 0;
1272 break;
1273 }
1274 }
1275
1276 if (is_ndn) {
1277 if (list_empty(&ioa_cfg->free_res_q)) {
1278 ipr_send_hcam(ioa_cfg,
1279 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1280 hostrcb);
1281 return;
1282 }
1283
1284 res = list_entry(ioa_cfg->free_res_q.next,
1285 struct ipr_resource_entry, queue);
1286
1287 list_del(&res->queue);
1288 ipr_init_res_entry(res, &cfgtew);
1289 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1290 }
1291
1292 ipr_update_res_entry(res, &cfgtew);
1293
1294 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1295 if (res->sdev) {
1296 res->del_from_ml = 1;
1297 res->res_handle = IPR_INVALID_RES_HANDLE;
1298 if (ioa_cfg->allow_ml_add_del)
1299 schedule_work(&ioa_cfg->work_q);
1300 } else {
1301 ipr_clear_res_target(res);
1302 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1303 }
1304 } else if (!res->sdev) {
1305 res->add_to_ml = 1;
1306 if (ioa_cfg->allow_ml_add_del)
1307 schedule_work(&ioa_cfg->work_q);
1308 }
1309
1310 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1311 }
1312
1313 /**
1314 * ipr_process_ccn - Op done function for a CCN.
1315 * @ipr_cmd: ipr command struct
1316 *
1317 * This function is the op done function for a configuration
1318 * change notification host controlled async from the adapter.
1319 *
1320 * Return value:
1321 * none
1322 **/
1323 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1324 {
1325 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1326 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1327 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1328
1329 list_del(&hostrcb->queue);
1330 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1331
1332 if (ioasc) {
1333 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1334 dev_err(&ioa_cfg->pdev->dev,
1335 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1336
1337 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1338 } else {
1339 ipr_handle_config_change(ioa_cfg, hostrcb);
1340 }
1341 }
1342
1343 /**
1344 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1345 * @i: index into buffer
1346 * @buf: string to modify
1347 *
1348 * This function will strip all trailing whitespace, pad the end
1349 * of the string with a single space, and NULL terminate the string.
1350 *
1351 * Return value:
1352 * new length of string
1353 **/
1354 static int strip_and_pad_whitespace(int i, char *buf)
1355 {
1356 while (i && buf[i] == ' ')
1357 i--;
1358 buf[i+1] = ' ';
1359 buf[i+2] = '\0';
1360 return i + 2;
1361 }
1362
1363 /**
1364 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1365 * @prefix: string to print at start of printk
1366 * @hostrcb: hostrcb pointer
1367 * @vpd: vendor/product id/sn struct
1368 *
1369 * Return value:
1370 * none
1371 **/
1372 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1373 struct ipr_vpd *vpd)
1374 {
1375 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1376 int i = 0;
1377
1378 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1379 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1380
1381 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1382 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1383
1384 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1385 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1386
1387 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1388 }
1389
1390 /**
1391 * ipr_log_vpd - Log the passed VPD to the error log.
1392 * @vpd: vendor/product id/sn struct
1393 *
1394 * Return value:
1395 * none
1396 **/
1397 static void ipr_log_vpd(struct ipr_vpd *vpd)
1398 {
1399 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1400 + IPR_SERIAL_NUM_LEN];
1401
1402 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1403 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1404 IPR_PROD_ID_LEN);
1405 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1406 ipr_err("Vendor/Product ID: %s\n", buffer);
1407
1408 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1409 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1410 ipr_err(" Serial Number: %s\n", buffer);
1411 }
1412
1413 /**
1414 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1415 * @prefix: string to print at start of printk
1416 * @hostrcb: hostrcb pointer
1417 * @vpd: vendor/product id/sn/wwn struct
1418 *
1419 * Return value:
1420 * none
1421 **/
1422 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1423 struct ipr_ext_vpd *vpd)
1424 {
1425 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1426 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1427 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1428 }
1429
1430 /**
1431 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1432 * @vpd: vendor/product id/sn/wwn struct
1433 *
1434 * Return value:
1435 * none
1436 **/
1437 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1438 {
1439 ipr_log_vpd(&vpd->vpd);
1440 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1441 be32_to_cpu(vpd->wwid[1]));
1442 }
1443
1444 /**
1445 * ipr_log_enhanced_cache_error - Log a cache error.
1446 * @ioa_cfg: ioa config struct
1447 * @hostrcb: hostrcb struct
1448 *
1449 * Return value:
1450 * none
1451 **/
1452 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1453 struct ipr_hostrcb *hostrcb)
1454 {
1455 struct ipr_hostrcb_type_12_error *error;
1456
1457 if (ioa_cfg->sis64)
1458 error = &hostrcb->hcam.u.error64.u.type_12_error;
1459 else
1460 error = &hostrcb->hcam.u.error.u.type_12_error;
1461
1462 ipr_err("-----Current Configuration-----\n");
1463 ipr_err("Cache Directory Card Information:\n");
1464 ipr_log_ext_vpd(&error->ioa_vpd);
1465 ipr_err("Adapter Card Information:\n");
1466 ipr_log_ext_vpd(&error->cfc_vpd);
1467
1468 ipr_err("-----Expected Configuration-----\n");
1469 ipr_err("Cache Directory Card Information:\n");
1470 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1471 ipr_err("Adapter Card Information:\n");
1472 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1473
1474 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1475 be32_to_cpu(error->ioa_data[0]),
1476 be32_to_cpu(error->ioa_data[1]),
1477 be32_to_cpu(error->ioa_data[2]));
1478 }
1479
1480 /**
1481 * ipr_log_cache_error - Log a cache error.
1482 * @ioa_cfg: ioa config struct
1483 * @hostrcb: hostrcb struct
1484 *
1485 * Return value:
1486 * none
1487 **/
1488 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1489 struct ipr_hostrcb *hostrcb)
1490 {
1491 struct ipr_hostrcb_type_02_error *error =
1492 &hostrcb->hcam.u.error.u.type_02_error;
1493
1494 ipr_err("-----Current Configuration-----\n");
1495 ipr_err("Cache Directory Card Information:\n");
1496 ipr_log_vpd(&error->ioa_vpd);
1497 ipr_err("Adapter Card Information:\n");
1498 ipr_log_vpd(&error->cfc_vpd);
1499
1500 ipr_err("-----Expected Configuration-----\n");
1501 ipr_err("Cache Directory Card Information:\n");
1502 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1503 ipr_err("Adapter Card Information:\n");
1504 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1505
1506 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1507 be32_to_cpu(error->ioa_data[0]),
1508 be32_to_cpu(error->ioa_data[1]),
1509 be32_to_cpu(error->ioa_data[2]));
1510 }
1511
1512 /**
1513 * ipr_log_enhanced_config_error - Log a configuration error.
1514 * @ioa_cfg: ioa config struct
1515 * @hostrcb: hostrcb struct
1516 *
1517 * Return value:
1518 * none
1519 **/
1520 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1521 struct ipr_hostrcb *hostrcb)
1522 {
1523 int errors_logged, i;
1524 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1525 struct ipr_hostrcb_type_13_error *error;
1526
1527 error = &hostrcb->hcam.u.error.u.type_13_error;
1528 errors_logged = be32_to_cpu(error->errors_logged);
1529
1530 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1531 be32_to_cpu(error->errors_detected), errors_logged);
1532
1533 dev_entry = error->dev;
1534
1535 for (i = 0; i < errors_logged; i++, dev_entry++) {
1536 ipr_err_separator;
1537
1538 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1539 ipr_log_ext_vpd(&dev_entry->vpd);
1540
1541 ipr_err("-----New Device Information-----\n");
1542 ipr_log_ext_vpd(&dev_entry->new_vpd);
1543
1544 ipr_err("Cache Directory Card Information:\n");
1545 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1546
1547 ipr_err("Adapter Card Information:\n");
1548 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1549 }
1550 }
1551
1552 /**
1553 * ipr_log_sis64_config_error - Log a device error.
1554 * @ioa_cfg: ioa config struct
1555 * @hostrcb: hostrcb struct
1556 *
1557 * Return value:
1558 * none
1559 **/
1560 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1561 struct ipr_hostrcb *hostrcb)
1562 {
1563 int errors_logged, i;
1564 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1565 struct ipr_hostrcb_type_23_error *error;
1566 char buffer[IPR_MAX_RES_PATH_LENGTH];
1567
1568 error = &hostrcb->hcam.u.error64.u.type_23_error;
1569 errors_logged = be32_to_cpu(error->errors_logged);
1570
1571 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1572 be32_to_cpu(error->errors_detected), errors_logged);
1573
1574 dev_entry = error->dev;
1575
1576 for (i = 0; i < errors_logged; i++, dev_entry++) {
1577 ipr_err_separator;
1578
1579 ipr_err("Device %d : %s", i + 1,
1580 ipr_format_res_path(dev_entry->res_path, buffer,
1581 sizeof(buffer)));
1582 ipr_log_ext_vpd(&dev_entry->vpd);
1583
1584 ipr_err("-----New Device Information-----\n");
1585 ipr_log_ext_vpd(&dev_entry->new_vpd);
1586
1587 ipr_err("Cache Directory Card Information:\n");
1588 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1589
1590 ipr_err("Adapter Card Information:\n");
1591 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1592 }
1593 }
1594
1595 /**
1596 * ipr_log_config_error - Log a configuration error.
1597 * @ioa_cfg: ioa config struct
1598 * @hostrcb: hostrcb struct
1599 *
1600 * Return value:
1601 * none
1602 **/
1603 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1604 struct ipr_hostrcb *hostrcb)
1605 {
1606 int errors_logged, i;
1607 struct ipr_hostrcb_device_data_entry *dev_entry;
1608 struct ipr_hostrcb_type_03_error *error;
1609
1610 error = &hostrcb->hcam.u.error.u.type_03_error;
1611 errors_logged = be32_to_cpu(error->errors_logged);
1612
1613 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1614 be32_to_cpu(error->errors_detected), errors_logged);
1615
1616 dev_entry = error->dev;
1617
1618 for (i = 0; i < errors_logged; i++, dev_entry++) {
1619 ipr_err_separator;
1620
1621 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1622 ipr_log_vpd(&dev_entry->vpd);
1623
1624 ipr_err("-----New Device Information-----\n");
1625 ipr_log_vpd(&dev_entry->new_vpd);
1626
1627 ipr_err("Cache Directory Card Information:\n");
1628 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1629
1630 ipr_err("Adapter Card Information:\n");
1631 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1632
1633 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1634 be32_to_cpu(dev_entry->ioa_data[0]),
1635 be32_to_cpu(dev_entry->ioa_data[1]),
1636 be32_to_cpu(dev_entry->ioa_data[2]),
1637 be32_to_cpu(dev_entry->ioa_data[3]),
1638 be32_to_cpu(dev_entry->ioa_data[4]));
1639 }
1640 }
1641
1642 /**
1643 * ipr_log_enhanced_array_error - Log an array configuration error.
1644 * @ioa_cfg: ioa config struct
1645 * @hostrcb: hostrcb struct
1646 *
1647 * Return value:
1648 * none
1649 **/
1650 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1651 struct ipr_hostrcb *hostrcb)
1652 {
1653 int i, num_entries;
1654 struct ipr_hostrcb_type_14_error *error;
1655 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1656 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1657
1658 error = &hostrcb->hcam.u.error.u.type_14_error;
1659
1660 ipr_err_separator;
1661
1662 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1663 error->protection_level,
1664 ioa_cfg->host->host_no,
1665 error->last_func_vset_res_addr.bus,
1666 error->last_func_vset_res_addr.target,
1667 error->last_func_vset_res_addr.lun);
1668
1669 ipr_err_separator;
1670
1671 array_entry = error->array_member;
1672 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1673 ARRAY_SIZE(error->array_member));
1674
1675 for (i = 0; i < num_entries; i++, array_entry++) {
1676 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1677 continue;
1678
1679 if (be32_to_cpu(error->exposed_mode_adn) == i)
1680 ipr_err("Exposed Array Member %d:\n", i);
1681 else
1682 ipr_err("Array Member %d:\n", i);
1683
1684 ipr_log_ext_vpd(&array_entry->vpd);
1685 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1686 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1687 "Expected Location");
1688
1689 ipr_err_separator;
1690 }
1691 }
1692
1693 /**
1694 * ipr_log_array_error - Log an array configuration error.
1695 * @ioa_cfg: ioa config struct
1696 * @hostrcb: hostrcb struct
1697 *
1698 * Return value:
1699 * none
1700 **/
1701 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1702 struct ipr_hostrcb *hostrcb)
1703 {
1704 int i;
1705 struct ipr_hostrcb_type_04_error *error;
1706 struct ipr_hostrcb_array_data_entry *array_entry;
1707 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1708
1709 error = &hostrcb->hcam.u.error.u.type_04_error;
1710
1711 ipr_err_separator;
1712
1713 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1714 error->protection_level,
1715 ioa_cfg->host->host_no,
1716 error->last_func_vset_res_addr.bus,
1717 error->last_func_vset_res_addr.target,
1718 error->last_func_vset_res_addr.lun);
1719
1720 ipr_err_separator;
1721
1722 array_entry = error->array_member;
1723
1724 for (i = 0; i < 18; i++) {
1725 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1726 continue;
1727
1728 if (be32_to_cpu(error->exposed_mode_adn) == i)
1729 ipr_err("Exposed Array Member %d:\n", i);
1730 else
1731 ipr_err("Array Member %d:\n", i);
1732
1733 ipr_log_vpd(&array_entry->vpd);
1734
1735 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1736 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1737 "Expected Location");
1738
1739 ipr_err_separator;
1740
1741 if (i == 9)
1742 array_entry = error->array_member2;
1743 else
1744 array_entry++;
1745 }
1746 }
1747
1748 /**
1749 * ipr_log_hex_data - Log additional hex IOA error data.
1750 * @ioa_cfg: ioa config struct
1751 * @data: IOA error data
1752 * @len: data length
1753 *
1754 * Return value:
1755 * none
1756 **/
1757 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1758 {
1759 int i;
1760
1761 if (len == 0)
1762 return;
1763
1764 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1765 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1766
1767 for (i = 0; i < len / 4; i += 4) {
1768 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1769 be32_to_cpu(data[i]),
1770 be32_to_cpu(data[i+1]),
1771 be32_to_cpu(data[i+2]),
1772 be32_to_cpu(data[i+3]));
1773 }
1774 }
1775
1776 /**
1777 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1778 * @ioa_cfg: ioa config struct
1779 * @hostrcb: hostrcb struct
1780 *
1781 * Return value:
1782 * none
1783 **/
1784 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1785 struct ipr_hostrcb *hostrcb)
1786 {
1787 struct ipr_hostrcb_type_17_error *error;
1788
1789 if (ioa_cfg->sis64)
1790 error = &hostrcb->hcam.u.error64.u.type_17_error;
1791 else
1792 error = &hostrcb->hcam.u.error.u.type_17_error;
1793
1794 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1795 strim(error->failure_reason);
1796
1797 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1798 be32_to_cpu(hostrcb->hcam.u.error.prc));
1799 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1800 ipr_log_hex_data(ioa_cfg, error->data,
1801 be32_to_cpu(hostrcb->hcam.length) -
1802 (offsetof(struct ipr_hostrcb_error, u) +
1803 offsetof(struct ipr_hostrcb_type_17_error, data)));
1804 }
1805
1806 /**
1807 * ipr_log_dual_ioa_error - Log a dual adapter error.
1808 * @ioa_cfg: ioa config struct
1809 * @hostrcb: hostrcb struct
1810 *
1811 * Return value:
1812 * none
1813 **/
1814 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1815 struct ipr_hostrcb *hostrcb)
1816 {
1817 struct ipr_hostrcb_type_07_error *error;
1818
1819 error = &hostrcb->hcam.u.error.u.type_07_error;
1820 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1821 strim(error->failure_reason);
1822
1823 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1824 be32_to_cpu(hostrcb->hcam.u.error.prc));
1825 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1826 ipr_log_hex_data(ioa_cfg, error->data,
1827 be32_to_cpu(hostrcb->hcam.length) -
1828 (offsetof(struct ipr_hostrcb_error, u) +
1829 offsetof(struct ipr_hostrcb_type_07_error, data)));
1830 }
1831
1832 static const struct {
1833 u8 active;
1834 char *desc;
1835 } path_active_desc[] = {
1836 { IPR_PATH_NO_INFO, "Path" },
1837 { IPR_PATH_ACTIVE, "Active path" },
1838 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1839 };
1840
1841 static const struct {
1842 u8 state;
1843 char *desc;
1844 } path_state_desc[] = {
1845 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1846 { IPR_PATH_HEALTHY, "is healthy" },
1847 { IPR_PATH_DEGRADED, "is degraded" },
1848 { IPR_PATH_FAILED, "is failed" }
1849 };
1850
1851 /**
1852 * ipr_log_fabric_path - Log a fabric path error
1853 * @hostrcb: hostrcb struct
1854 * @fabric: fabric descriptor
1855 *
1856 * Return value:
1857 * none
1858 **/
1859 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1860 struct ipr_hostrcb_fabric_desc *fabric)
1861 {
1862 int i, j;
1863 u8 path_state = fabric->path_state;
1864 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1865 u8 state = path_state & IPR_PATH_STATE_MASK;
1866
1867 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1868 if (path_active_desc[i].active != active)
1869 continue;
1870
1871 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1872 if (path_state_desc[j].state != state)
1873 continue;
1874
1875 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1876 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1877 path_active_desc[i].desc, path_state_desc[j].desc,
1878 fabric->ioa_port);
1879 } else if (fabric->cascaded_expander == 0xff) {
1880 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1881 path_active_desc[i].desc, path_state_desc[j].desc,
1882 fabric->ioa_port, fabric->phy);
1883 } else if (fabric->phy == 0xff) {
1884 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1885 path_active_desc[i].desc, path_state_desc[j].desc,
1886 fabric->ioa_port, fabric->cascaded_expander);
1887 } else {
1888 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1889 path_active_desc[i].desc, path_state_desc[j].desc,
1890 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1891 }
1892 return;
1893 }
1894 }
1895
1896 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1897 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1898 }
1899
1900 /**
1901 * ipr_log64_fabric_path - Log a fabric path error
1902 * @hostrcb: hostrcb struct
1903 * @fabric: fabric descriptor
1904 *
1905 * Return value:
1906 * none
1907 **/
1908 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
1909 struct ipr_hostrcb64_fabric_desc *fabric)
1910 {
1911 int i, j;
1912 u8 path_state = fabric->path_state;
1913 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1914 u8 state = path_state & IPR_PATH_STATE_MASK;
1915 char buffer[IPR_MAX_RES_PATH_LENGTH];
1916
1917 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1918 if (path_active_desc[i].active != active)
1919 continue;
1920
1921 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1922 if (path_state_desc[j].state != state)
1923 continue;
1924
1925 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
1926 path_active_desc[i].desc, path_state_desc[j].desc,
1927 ipr_format_res_path(fabric->res_path, buffer,
1928 sizeof(buffer)));
1929 return;
1930 }
1931 }
1932
1933 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
1934 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer)));
1935 }
1936
1937 static const struct {
1938 u8 type;
1939 char *desc;
1940 } path_type_desc[] = {
1941 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1942 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1943 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1944 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1945 };
1946
1947 static const struct {
1948 u8 status;
1949 char *desc;
1950 } path_status_desc[] = {
1951 { IPR_PATH_CFG_NO_PROB, "Functional" },
1952 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1953 { IPR_PATH_CFG_FAILED, "Failed" },
1954 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1955 { IPR_PATH_NOT_DETECTED, "Missing" },
1956 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1957 };
1958
1959 static const char *link_rate[] = {
1960 "unknown",
1961 "disabled",
1962 "phy reset problem",
1963 "spinup hold",
1964 "port selector",
1965 "unknown",
1966 "unknown",
1967 "unknown",
1968 "1.5Gbps",
1969 "3.0Gbps",
1970 "unknown",
1971 "unknown",
1972 "unknown",
1973 "unknown",
1974 "unknown",
1975 "unknown"
1976 };
1977
1978 /**
1979 * ipr_log_path_elem - Log a fabric path element.
1980 * @hostrcb: hostrcb struct
1981 * @cfg: fabric path element struct
1982 *
1983 * Return value:
1984 * none
1985 **/
1986 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1987 struct ipr_hostrcb_config_element *cfg)
1988 {
1989 int i, j;
1990 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1991 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1992
1993 if (type == IPR_PATH_CFG_NOT_EXIST)
1994 return;
1995
1996 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1997 if (path_type_desc[i].type != type)
1998 continue;
1999
2000 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2001 if (path_status_desc[j].status != status)
2002 continue;
2003
2004 if (type == IPR_PATH_CFG_IOA_PORT) {
2005 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2006 path_status_desc[j].desc, path_type_desc[i].desc,
2007 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2008 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2009 } else {
2010 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2011 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2012 path_status_desc[j].desc, path_type_desc[i].desc,
2013 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2014 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2015 } else if (cfg->cascaded_expander == 0xff) {
2016 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2017 "WWN=%08X%08X\n", path_status_desc[j].desc,
2018 path_type_desc[i].desc, cfg->phy,
2019 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2020 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2021 } else if (cfg->phy == 0xff) {
2022 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2023 "WWN=%08X%08X\n", path_status_desc[j].desc,
2024 path_type_desc[i].desc, cfg->cascaded_expander,
2025 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2026 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2027 } else {
2028 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2029 "WWN=%08X%08X\n", path_status_desc[j].desc,
2030 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2031 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2032 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2033 }
2034 }
2035 return;
2036 }
2037 }
2038
2039 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2040 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2041 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2042 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2043 }
2044
2045 /**
2046 * ipr_log64_path_elem - Log a fabric path element.
2047 * @hostrcb: hostrcb struct
2048 * @cfg: fabric path element struct
2049 *
2050 * Return value:
2051 * none
2052 **/
2053 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2054 struct ipr_hostrcb64_config_element *cfg)
2055 {
2056 int i, j;
2057 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2058 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2059 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2060 char buffer[IPR_MAX_RES_PATH_LENGTH];
2061
2062 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2063 return;
2064
2065 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2066 if (path_type_desc[i].type != type)
2067 continue;
2068
2069 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2070 if (path_status_desc[j].status != status)
2071 continue;
2072
2073 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2074 path_status_desc[j].desc, path_type_desc[i].desc,
2075 ipr_format_res_path(cfg->res_path, buffer,
2076 sizeof(buffer)),
2077 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2078 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2079 return;
2080 }
2081 }
2082 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2083 "WWN=%08X%08X\n", cfg->type_status,
2084 ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)),
2085 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2086 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2087 }
2088
2089 /**
2090 * ipr_log_fabric_error - Log a fabric error.
2091 * @ioa_cfg: ioa config struct
2092 * @hostrcb: hostrcb struct
2093 *
2094 * Return value:
2095 * none
2096 **/
2097 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2098 struct ipr_hostrcb *hostrcb)
2099 {
2100 struct ipr_hostrcb_type_20_error *error;
2101 struct ipr_hostrcb_fabric_desc *fabric;
2102 struct ipr_hostrcb_config_element *cfg;
2103 int i, add_len;
2104
2105 error = &hostrcb->hcam.u.error.u.type_20_error;
2106 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2107 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2108
2109 add_len = be32_to_cpu(hostrcb->hcam.length) -
2110 (offsetof(struct ipr_hostrcb_error, u) +
2111 offsetof(struct ipr_hostrcb_type_20_error, desc));
2112
2113 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2114 ipr_log_fabric_path(hostrcb, fabric);
2115 for_each_fabric_cfg(fabric, cfg)
2116 ipr_log_path_elem(hostrcb, cfg);
2117
2118 add_len -= be16_to_cpu(fabric->length);
2119 fabric = (struct ipr_hostrcb_fabric_desc *)
2120 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2121 }
2122
2123 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2124 }
2125
2126 /**
2127 * ipr_log_sis64_array_error - Log a sis64 array error.
2128 * @ioa_cfg: ioa config struct
2129 * @hostrcb: hostrcb struct
2130 *
2131 * Return value:
2132 * none
2133 **/
2134 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2135 struct ipr_hostrcb *hostrcb)
2136 {
2137 int i, num_entries;
2138 struct ipr_hostrcb_type_24_error *error;
2139 struct ipr_hostrcb64_array_data_entry *array_entry;
2140 char buffer[IPR_MAX_RES_PATH_LENGTH];
2141 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2142
2143 error = &hostrcb->hcam.u.error64.u.type_24_error;
2144
2145 ipr_err_separator;
2146
2147 ipr_err("RAID %s Array Configuration: %s\n",
2148 error->protection_level,
2149 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer)));
2150
2151 ipr_err_separator;
2152
2153 array_entry = error->array_member;
2154 num_entries = min_t(u32, error->num_entries,
2155 ARRAY_SIZE(error->array_member));
2156
2157 for (i = 0; i < num_entries; i++, array_entry++) {
2158
2159 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2160 continue;
2161
2162 if (error->exposed_mode_adn == i)
2163 ipr_err("Exposed Array Member %d:\n", i);
2164 else
2165 ipr_err("Array Member %d:\n", i);
2166
2167 ipr_err("Array Member %d:\n", i);
2168 ipr_log_ext_vpd(&array_entry->vpd);
2169 ipr_err("Current Location: %s\n",
2170 ipr_format_res_path(array_entry->res_path, buffer,
2171 sizeof(buffer)));
2172 ipr_err("Expected Location: %s\n",
2173 ipr_format_res_path(array_entry->expected_res_path,
2174 buffer, sizeof(buffer)));
2175
2176 ipr_err_separator;
2177 }
2178 }
2179
2180 /**
2181 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2182 * @ioa_cfg: ioa config struct
2183 * @hostrcb: hostrcb struct
2184 *
2185 * Return value:
2186 * none
2187 **/
2188 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2189 struct ipr_hostrcb *hostrcb)
2190 {
2191 struct ipr_hostrcb_type_30_error *error;
2192 struct ipr_hostrcb64_fabric_desc *fabric;
2193 struct ipr_hostrcb64_config_element *cfg;
2194 int i, add_len;
2195
2196 error = &hostrcb->hcam.u.error64.u.type_30_error;
2197
2198 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2199 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2200
2201 add_len = be32_to_cpu(hostrcb->hcam.length) -
2202 (offsetof(struct ipr_hostrcb64_error, u) +
2203 offsetof(struct ipr_hostrcb_type_30_error, desc));
2204
2205 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2206 ipr_log64_fabric_path(hostrcb, fabric);
2207 for_each_fabric_cfg(fabric, cfg)
2208 ipr_log64_path_elem(hostrcb, cfg);
2209
2210 add_len -= be16_to_cpu(fabric->length);
2211 fabric = (struct ipr_hostrcb64_fabric_desc *)
2212 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2213 }
2214
2215 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2216 }
2217
2218 /**
2219 * ipr_log_generic_error - Log an adapter error.
2220 * @ioa_cfg: ioa config struct
2221 * @hostrcb: hostrcb struct
2222 *
2223 * Return value:
2224 * none
2225 **/
2226 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2227 struct ipr_hostrcb *hostrcb)
2228 {
2229 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2230 be32_to_cpu(hostrcb->hcam.length));
2231 }
2232
2233 /**
2234 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2235 * @ioasc: IOASC
2236 *
2237 * This function will return the index of into the ipr_error_table
2238 * for the specified IOASC. If the IOASC is not in the table,
2239 * 0 will be returned, which points to the entry used for unknown errors.
2240 *
2241 * Return value:
2242 * index into the ipr_error_table
2243 **/
2244 static u32 ipr_get_error(u32 ioasc)
2245 {
2246 int i;
2247
2248 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2249 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2250 return i;
2251
2252 return 0;
2253 }
2254
2255 /**
2256 * ipr_handle_log_data - Log an adapter error.
2257 * @ioa_cfg: ioa config struct
2258 * @hostrcb: hostrcb struct
2259 *
2260 * This function logs an adapter error to the system.
2261 *
2262 * Return value:
2263 * none
2264 **/
2265 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2266 struct ipr_hostrcb *hostrcb)
2267 {
2268 u32 ioasc;
2269 int error_index;
2270
2271 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2272 return;
2273
2274 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2275 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2276
2277 if (ioa_cfg->sis64)
2278 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2279 else
2280 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2281
2282 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2283 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2284 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2285 scsi_report_bus_reset(ioa_cfg->host,
2286 hostrcb->hcam.u.error.fd_res_addr.bus);
2287 }
2288
2289 error_index = ipr_get_error(ioasc);
2290
2291 if (!ipr_error_table[error_index].log_hcam)
2292 return;
2293
2294 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2295
2296 /* Set indication we have logged an error */
2297 ioa_cfg->errors_logged++;
2298
2299 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2300 return;
2301 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2302 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2303
2304 switch (hostrcb->hcam.overlay_id) {
2305 case IPR_HOST_RCB_OVERLAY_ID_2:
2306 ipr_log_cache_error(ioa_cfg, hostrcb);
2307 break;
2308 case IPR_HOST_RCB_OVERLAY_ID_3:
2309 ipr_log_config_error(ioa_cfg, hostrcb);
2310 break;
2311 case IPR_HOST_RCB_OVERLAY_ID_4:
2312 case IPR_HOST_RCB_OVERLAY_ID_6:
2313 ipr_log_array_error(ioa_cfg, hostrcb);
2314 break;
2315 case IPR_HOST_RCB_OVERLAY_ID_7:
2316 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2317 break;
2318 case IPR_HOST_RCB_OVERLAY_ID_12:
2319 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2320 break;
2321 case IPR_HOST_RCB_OVERLAY_ID_13:
2322 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2323 break;
2324 case IPR_HOST_RCB_OVERLAY_ID_14:
2325 case IPR_HOST_RCB_OVERLAY_ID_16:
2326 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2327 break;
2328 case IPR_HOST_RCB_OVERLAY_ID_17:
2329 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2330 break;
2331 case IPR_HOST_RCB_OVERLAY_ID_20:
2332 ipr_log_fabric_error(ioa_cfg, hostrcb);
2333 break;
2334 case IPR_HOST_RCB_OVERLAY_ID_23:
2335 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2336 break;
2337 case IPR_HOST_RCB_OVERLAY_ID_24:
2338 case IPR_HOST_RCB_OVERLAY_ID_26:
2339 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2340 break;
2341 case IPR_HOST_RCB_OVERLAY_ID_30:
2342 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2343 break;
2344 case IPR_HOST_RCB_OVERLAY_ID_1:
2345 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2346 default:
2347 ipr_log_generic_error(ioa_cfg, hostrcb);
2348 break;
2349 }
2350 }
2351
2352 /**
2353 * ipr_process_error - Op done function for an adapter error log.
2354 * @ipr_cmd: ipr command struct
2355 *
2356 * This function is the op done function for an error log host
2357 * controlled async from the adapter. It will log the error and
2358 * send the HCAM back to the adapter.
2359 *
2360 * Return value:
2361 * none
2362 **/
2363 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2364 {
2365 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2366 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2367 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2368 u32 fd_ioasc;
2369
2370 if (ioa_cfg->sis64)
2371 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2372 else
2373 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2374
2375 list_del(&hostrcb->queue);
2376 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2377
2378 if (!ioasc) {
2379 ipr_handle_log_data(ioa_cfg, hostrcb);
2380 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2381 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2382 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2383 dev_err(&ioa_cfg->pdev->dev,
2384 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2385 }
2386
2387 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2388 }
2389
2390 /**
2391 * ipr_timeout - An internally generated op has timed out.
2392 * @ipr_cmd: ipr command struct
2393 *
2394 * This function blocks host requests and initiates an
2395 * adapter reset.
2396 *
2397 * Return value:
2398 * none
2399 **/
2400 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2401 {
2402 unsigned long lock_flags = 0;
2403 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2404
2405 ENTER;
2406 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2407
2408 ioa_cfg->errors_logged++;
2409 dev_err(&ioa_cfg->pdev->dev,
2410 "Adapter being reset due to command timeout.\n");
2411
2412 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2413 ioa_cfg->sdt_state = GET_DUMP;
2414
2415 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2416 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2417
2418 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2419 LEAVE;
2420 }
2421
2422 /**
2423 * ipr_oper_timeout - Adapter timed out transitioning to operational
2424 * @ipr_cmd: ipr command struct
2425 *
2426 * This function blocks host requests and initiates an
2427 * adapter reset.
2428 *
2429 * Return value:
2430 * none
2431 **/
2432 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2433 {
2434 unsigned long lock_flags = 0;
2435 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2436
2437 ENTER;
2438 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2439
2440 ioa_cfg->errors_logged++;
2441 dev_err(&ioa_cfg->pdev->dev,
2442 "Adapter timed out transitioning to operational.\n");
2443
2444 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2445 ioa_cfg->sdt_state = GET_DUMP;
2446
2447 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2448 if (ipr_fastfail)
2449 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2450 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2451 }
2452
2453 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2454 LEAVE;
2455 }
2456
2457 /**
2458 * ipr_reset_reload - Reset/Reload the IOA
2459 * @ioa_cfg: ioa config struct
2460 * @shutdown_type: shutdown type
2461 *
2462 * This function resets the adapter and re-initializes it.
2463 * This function assumes that all new host commands have been stopped.
2464 * Return value:
2465 * SUCCESS / FAILED
2466 **/
2467 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
2468 enum ipr_shutdown_type shutdown_type)
2469 {
2470 if (!ioa_cfg->in_reset_reload)
2471 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
2472
2473 spin_unlock_irq(ioa_cfg->host->host_lock);
2474 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2475 spin_lock_irq(ioa_cfg->host->host_lock);
2476
2477 /* If we got hit with a host reset while we were already resetting
2478 the adapter for some reason, and the reset failed. */
2479 if (ioa_cfg->ioa_is_dead) {
2480 ipr_trace;
2481 return FAILED;
2482 }
2483
2484 return SUCCESS;
2485 }
2486
2487 /**
2488 * ipr_find_ses_entry - Find matching SES in SES table
2489 * @res: resource entry struct of SES
2490 *
2491 * Return value:
2492 * pointer to SES table entry / NULL on failure
2493 **/
2494 static const struct ipr_ses_table_entry *
2495 ipr_find_ses_entry(struct ipr_resource_entry *res)
2496 {
2497 int i, j, matches;
2498 struct ipr_std_inq_vpids *vpids;
2499 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2500
2501 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2502 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2503 if (ste->compare_product_id_byte[j] == 'X') {
2504 vpids = &res->std_inq_data.vpids;
2505 if (vpids->product_id[j] == ste->product_id[j])
2506 matches++;
2507 else
2508 break;
2509 } else
2510 matches++;
2511 }
2512
2513 if (matches == IPR_PROD_ID_LEN)
2514 return ste;
2515 }
2516
2517 return NULL;
2518 }
2519
2520 /**
2521 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2522 * @ioa_cfg: ioa config struct
2523 * @bus: SCSI bus
2524 * @bus_width: bus width
2525 *
2526 * Return value:
2527 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2528 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2529 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2530 * max 160MHz = max 320MB/sec).
2531 **/
2532 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2533 {
2534 struct ipr_resource_entry *res;
2535 const struct ipr_ses_table_entry *ste;
2536 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2537
2538 /* Loop through each config table entry in the config table buffer */
2539 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2540 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2541 continue;
2542
2543 if (bus != res->bus)
2544 continue;
2545
2546 if (!(ste = ipr_find_ses_entry(res)))
2547 continue;
2548
2549 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2550 }
2551
2552 return max_xfer_rate;
2553 }
2554
2555 /**
2556 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2557 * @ioa_cfg: ioa config struct
2558 * @max_delay: max delay in micro-seconds to wait
2559 *
2560 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2561 *
2562 * Return value:
2563 * 0 on success / other on failure
2564 **/
2565 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2566 {
2567 volatile u32 pcii_reg;
2568 int delay = 1;
2569
2570 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2571 while (delay < max_delay) {
2572 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2573
2574 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2575 return 0;
2576
2577 /* udelay cannot be used if delay is more than a few milliseconds */
2578 if ((delay / 1000) > MAX_UDELAY_MS)
2579 mdelay(delay / 1000);
2580 else
2581 udelay(delay);
2582
2583 delay += delay;
2584 }
2585 return -EIO;
2586 }
2587
2588 /**
2589 * ipr_get_sis64_dump_data_section - Dump IOA memory
2590 * @ioa_cfg: ioa config struct
2591 * @start_addr: adapter address to dump
2592 * @dest: destination kernel buffer
2593 * @length_in_words: length to dump in 4 byte words
2594 *
2595 * Return value:
2596 * 0 on success
2597 **/
2598 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2599 u32 start_addr,
2600 __be32 *dest, u32 length_in_words)
2601 {
2602 int i;
2603
2604 for (i = 0; i < length_in_words; i++) {
2605 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2606 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2607 dest++;
2608 }
2609
2610 return 0;
2611 }
2612
2613 /**
2614 * ipr_get_ldump_data_section - Dump IOA memory
2615 * @ioa_cfg: ioa config struct
2616 * @start_addr: adapter address to dump
2617 * @dest: destination kernel buffer
2618 * @length_in_words: length to dump in 4 byte words
2619 *
2620 * Return value:
2621 * 0 on success / -EIO on failure
2622 **/
2623 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2624 u32 start_addr,
2625 __be32 *dest, u32 length_in_words)
2626 {
2627 volatile u32 temp_pcii_reg;
2628 int i, delay = 0;
2629
2630 if (ioa_cfg->sis64)
2631 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2632 dest, length_in_words);
2633
2634 /* Write IOA interrupt reg starting LDUMP state */
2635 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2636 ioa_cfg->regs.set_uproc_interrupt_reg32);
2637
2638 /* Wait for IO debug acknowledge */
2639 if (ipr_wait_iodbg_ack(ioa_cfg,
2640 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2641 dev_err(&ioa_cfg->pdev->dev,
2642 "IOA dump long data transfer timeout\n");
2643 return -EIO;
2644 }
2645
2646 /* Signal LDUMP interlocked - clear IO debug ack */
2647 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2648 ioa_cfg->regs.clr_interrupt_reg);
2649
2650 /* Write Mailbox with starting address */
2651 writel(start_addr, ioa_cfg->ioa_mailbox);
2652
2653 /* Signal address valid - clear IOA Reset alert */
2654 writel(IPR_UPROCI_RESET_ALERT,
2655 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2656
2657 for (i = 0; i < length_in_words; i++) {
2658 /* Wait for IO debug acknowledge */
2659 if (ipr_wait_iodbg_ack(ioa_cfg,
2660 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2661 dev_err(&ioa_cfg->pdev->dev,
2662 "IOA dump short data transfer timeout\n");
2663 return -EIO;
2664 }
2665
2666 /* Read data from mailbox and increment destination pointer */
2667 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2668 dest++;
2669
2670 /* For all but the last word of data, signal data received */
2671 if (i < (length_in_words - 1)) {
2672 /* Signal dump data received - Clear IO debug Ack */
2673 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2674 ioa_cfg->regs.clr_interrupt_reg);
2675 }
2676 }
2677
2678 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2679 writel(IPR_UPROCI_RESET_ALERT,
2680 ioa_cfg->regs.set_uproc_interrupt_reg32);
2681
2682 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2683 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2684
2685 /* Signal dump data received - Clear IO debug Ack */
2686 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2687 ioa_cfg->regs.clr_interrupt_reg);
2688
2689 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2690 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2691 temp_pcii_reg =
2692 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2693
2694 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2695 return 0;
2696
2697 udelay(10);
2698 delay += 10;
2699 }
2700
2701 return 0;
2702 }
2703
2704 #ifdef CONFIG_SCSI_IPR_DUMP
2705 /**
2706 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2707 * @ioa_cfg: ioa config struct
2708 * @pci_address: adapter address
2709 * @length: length of data to copy
2710 *
2711 * Copy data from PCI adapter to kernel buffer.
2712 * Note: length MUST be a 4 byte multiple
2713 * Return value:
2714 * 0 on success / other on failure
2715 **/
2716 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2717 unsigned long pci_address, u32 length)
2718 {
2719 int bytes_copied = 0;
2720 int cur_len, rc, rem_len, rem_page_len;
2721 __be32 *page;
2722 unsigned long lock_flags = 0;
2723 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2724
2725 while (bytes_copied < length &&
2726 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2727 if (ioa_dump->page_offset >= PAGE_SIZE ||
2728 ioa_dump->page_offset == 0) {
2729 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2730
2731 if (!page) {
2732 ipr_trace;
2733 return bytes_copied;
2734 }
2735
2736 ioa_dump->page_offset = 0;
2737 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2738 ioa_dump->next_page_index++;
2739 } else
2740 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2741
2742 rem_len = length - bytes_copied;
2743 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2744 cur_len = min(rem_len, rem_page_len);
2745
2746 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2747 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2748 rc = -EIO;
2749 } else {
2750 rc = ipr_get_ldump_data_section(ioa_cfg,
2751 pci_address + bytes_copied,
2752 &page[ioa_dump->page_offset / 4],
2753 (cur_len / sizeof(u32)));
2754 }
2755 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2756
2757 if (!rc) {
2758 ioa_dump->page_offset += cur_len;
2759 bytes_copied += cur_len;
2760 } else {
2761 ipr_trace;
2762 break;
2763 }
2764 schedule();
2765 }
2766
2767 return bytes_copied;
2768 }
2769
2770 /**
2771 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2772 * @hdr: dump entry header struct
2773 *
2774 * Return value:
2775 * nothing
2776 **/
2777 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2778 {
2779 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2780 hdr->num_elems = 1;
2781 hdr->offset = sizeof(*hdr);
2782 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2783 }
2784
2785 /**
2786 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2787 * @ioa_cfg: ioa config struct
2788 * @driver_dump: driver dump struct
2789 *
2790 * Return value:
2791 * nothing
2792 **/
2793 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2794 struct ipr_driver_dump *driver_dump)
2795 {
2796 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2797
2798 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2799 driver_dump->ioa_type_entry.hdr.len =
2800 sizeof(struct ipr_dump_ioa_type_entry) -
2801 sizeof(struct ipr_dump_entry_header);
2802 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2803 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2804 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2805 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2806 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2807 ucode_vpd->minor_release[1];
2808 driver_dump->hdr.num_entries++;
2809 }
2810
2811 /**
2812 * ipr_dump_version_data - Fill in the driver version in the dump.
2813 * @ioa_cfg: ioa config struct
2814 * @driver_dump: driver dump struct
2815 *
2816 * Return value:
2817 * nothing
2818 **/
2819 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2820 struct ipr_driver_dump *driver_dump)
2821 {
2822 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2823 driver_dump->version_entry.hdr.len =
2824 sizeof(struct ipr_dump_version_entry) -
2825 sizeof(struct ipr_dump_entry_header);
2826 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2827 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2828 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2829 driver_dump->hdr.num_entries++;
2830 }
2831
2832 /**
2833 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2834 * @ioa_cfg: ioa config struct
2835 * @driver_dump: driver dump struct
2836 *
2837 * Return value:
2838 * nothing
2839 **/
2840 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2841 struct ipr_driver_dump *driver_dump)
2842 {
2843 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2844 driver_dump->trace_entry.hdr.len =
2845 sizeof(struct ipr_dump_trace_entry) -
2846 sizeof(struct ipr_dump_entry_header);
2847 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2848 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2849 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2850 driver_dump->hdr.num_entries++;
2851 }
2852
2853 /**
2854 * ipr_dump_location_data - Fill in the IOA location in the dump.
2855 * @ioa_cfg: ioa config struct
2856 * @driver_dump: driver dump struct
2857 *
2858 * Return value:
2859 * nothing
2860 **/
2861 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2862 struct ipr_driver_dump *driver_dump)
2863 {
2864 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2865 driver_dump->location_entry.hdr.len =
2866 sizeof(struct ipr_dump_location_entry) -
2867 sizeof(struct ipr_dump_entry_header);
2868 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2869 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2870 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2871 driver_dump->hdr.num_entries++;
2872 }
2873
2874 /**
2875 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2876 * @ioa_cfg: ioa config struct
2877 * @dump: dump struct
2878 *
2879 * Return value:
2880 * nothing
2881 **/
2882 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2883 {
2884 unsigned long start_addr, sdt_word;
2885 unsigned long lock_flags = 0;
2886 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2887 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2888 u32 num_entries, start_off, end_off;
2889 u32 bytes_to_copy, bytes_copied, rc;
2890 struct ipr_sdt *sdt;
2891 int valid = 1;
2892 int i;
2893
2894 ENTER;
2895
2896 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2897
2898 if (ioa_cfg->sdt_state != GET_DUMP) {
2899 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2900 return;
2901 }
2902
2903 if (ioa_cfg->sis64) {
2904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2905 ssleep(IPR_DUMP_DELAY_SECONDS);
2906 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2907 }
2908
2909 start_addr = readl(ioa_cfg->ioa_mailbox);
2910
2911 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
2912 dev_err(&ioa_cfg->pdev->dev,
2913 "Invalid dump table format: %lx\n", start_addr);
2914 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2915 return;
2916 }
2917
2918 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2919
2920 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2921
2922 /* Initialize the overall dump header */
2923 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2924 driver_dump->hdr.num_entries = 1;
2925 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2926 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2927 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2928 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2929
2930 ipr_dump_version_data(ioa_cfg, driver_dump);
2931 ipr_dump_location_data(ioa_cfg, driver_dump);
2932 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2933 ipr_dump_trace_data(ioa_cfg, driver_dump);
2934
2935 /* Update dump_header */
2936 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2937
2938 /* IOA Dump entry */
2939 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2940 ioa_dump->hdr.len = 0;
2941 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2942 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2943
2944 /* First entries in sdt are actually a list of dump addresses and
2945 lengths to gather the real dump data. sdt represents the pointer
2946 to the ioa generated dump table. Dump data will be extracted based
2947 on entries in this table */
2948 sdt = &ioa_dump->sdt;
2949
2950 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2951 sizeof(struct ipr_sdt) / sizeof(__be32));
2952
2953 /* Smart Dump table is ready to use and the first entry is valid */
2954 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
2955 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
2956 dev_err(&ioa_cfg->pdev->dev,
2957 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2958 rc, be32_to_cpu(sdt->hdr.state));
2959 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2960 ioa_cfg->sdt_state = DUMP_OBTAINED;
2961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2962 return;
2963 }
2964
2965 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2966
2967 if (num_entries > IPR_NUM_SDT_ENTRIES)
2968 num_entries = IPR_NUM_SDT_ENTRIES;
2969
2970 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2971
2972 for (i = 0; i < num_entries; i++) {
2973 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2974 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2975 break;
2976 }
2977
2978 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2979 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
2980 if (ioa_cfg->sis64)
2981 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
2982 else {
2983 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2984 end_off = be32_to_cpu(sdt->entry[i].end_token);
2985
2986 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
2987 bytes_to_copy = end_off - start_off;
2988 else
2989 valid = 0;
2990 }
2991 if (valid) {
2992 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2993 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2994 continue;
2995 }
2996
2997 /* Copy data from adapter to driver buffers */
2998 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2999 bytes_to_copy);
3000
3001 ioa_dump->hdr.len += bytes_copied;
3002
3003 if (bytes_copied != bytes_to_copy) {
3004 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3005 break;
3006 }
3007 }
3008 }
3009 }
3010
3011 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3012
3013 /* Update dump_header */
3014 driver_dump->hdr.len += ioa_dump->hdr.len;
3015 wmb();
3016 ioa_cfg->sdt_state = DUMP_OBTAINED;
3017 LEAVE;
3018 }
3019
3020 #else
3021 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
3022 #endif
3023
3024 /**
3025 * ipr_release_dump - Free adapter dump memory
3026 * @kref: kref struct
3027 *
3028 * Return value:
3029 * nothing
3030 **/
3031 static void ipr_release_dump(struct kref *kref)
3032 {
3033 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
3034 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3035 unsigned long lock_flags = 0;
3036 int i;
3037
3038 ENTER;
3039 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3040 ioa_cfg->dump = NULL;
3041 ioa_cfg->sdt_state = INACTIVE;
3042 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3043
3044 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3045 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3046
3047 kfree(dump);
3048 LEAVE;
3049 }
3050
3051 /**
3052 * ipr_worker_thread - Worker thread
3053 * @work: ioa config struct
3054 *
3055 * Called at task level from a work thread. This function takes care
3056 * of adding and removing device from the mid-layer as configuration
3057 * changes are detected by the adapter.
3058 *
3059 * Return value:
3060 * nothing
3061 **/
3062 static void ipr_worker_thread(struct work_struct *work)
3063 {
3064 unsigned long lock_flags;
3065 struct ipr_resource_entry *res;
3066 struct scsi_device *sdev;
3067 struct ipr_dump *dump;
3068 struct ipr_ioa_cfg *ioa_cfg =
3069 container_of(work, struct ipr_ioa_cfg, work_q);
3070 u8 bus, target, lun;
3071 int did_work;
3072
3073 ENTER;
3074 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3075
3076 if (ioa_cfg->sdt_state == GET_DUMP) {
3077 dump = ioa_cfg->dump;
3078 if (!dump) {
3079 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3080 return;
3081 }
3082 kref_get(&dump->kref);
3083 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3084 ipr_get_ioa_dump(ioa_cfg, dump);
3085 kref_put(&dump->kref, ipr_release_dump);
3086
3087 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3088 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
3089 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3090 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3091 return;
3092 }
3093
3094 restart:
3095 do {
3096 did_work = 0;
3097 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
3098 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3099 return;
3100 }
3101
3102 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3103 if (res->del_from_ml && res->sdev) {
3104 did_work = 1;
3105 sdev = res->sdev;
3106 if (!scsi_device_get(sdev)) {
3107 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3108 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3109 scsi_remove_device(sdev);
3110 scsi_device_put(sdev);
3111 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3112 }
3113 break;
3114 }
3115 }
3116 } while(did_work);
3117
3118 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3119 if (res->add_to_ml) {
3120 bus = res->bus;
3121 target = res->target;
3122 lun = res->lun;
3123 res->add_to_ml = 0;
3124 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3125 scsi_add_device(ioa_cfg->host, bus, target, lun);
3126 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3127 goto restart;
3128 }
3129 }
3130
3131 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3132 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3133 LEAVE;
3134 }
3135
3136 #ifdef CONFIG_SCSI_IPR_TRACE
3137 /**
3138 * ipr_read_trace - Dump the adapter trace
3139 * @filp: open sysfs file
3140 * @kobj: kobject struct
3141 * @bin_attr: bin_attribute struct
3142 * @buf: buffer
3143 * @off: offset
3144 * @count: buffer size
3145 *
3146 * Return value:
3147 * number of bytes printed to buffer
3148 **/
3149 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3150 struct bin_attribute *bin_attr,
3151 char *buf, loff_t off, size_t count)
3152 {
3153 struct device *dev = container_of(kobj, struct device, kobj);
3154 struct Scsi_Host *shost = class_to_shost(dev);
3155 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3156 unsigned long lock_flags = 0;
3157 ssize_t ret;
3158
3159 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3160 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3161 IPR_TRACE_SIZE);
3162 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3163
3164 return ret;
3165 }
3166
3167 static struct bin_attribute ipr_trace_attr = {
3168 .attr = {
3169 .name = "trace",
3170 .mode = S_IRUGO,
3171 },
3172 .size = 0,
3173 .read = ipr_read_trace,
3174 };
3175 #endif
3176
3177 /**
3178 * ipr_show_fw_version - Show the firmware version
3179 * @dev: class device struct
3180 * @buf: buffer
3181 *
3182 * Return value:
3183 * number of bytes printed to buffer
3184 **/
3185 static ssize_t ipr_show_fw_version(struct device *dev,
3186 struct device_attribute *attr, char *buf)
3187 {
3188 struct Scsi_Host *shost = class_to_shost(dev);
3189 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3190 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3191 unsigned long lock_flags = 0;
3192 int len;
3193
3194 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3195 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3196 ucode_vpd->major_release, ucode_vpd->card_type,
3197 ucode_vpd->minor_release[0],
3198 ucode_vpd->minor_release[1]);
3199 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3200 return len;
3201 }
3202
3203 static struct device_attribute ipr_fw_version_attr = {
3204 .attr = {
3205 .name = "fw_version",
3206 .mode = S_IRUGO,
3207 },
3208 .show = ipr_show_fw_version,
3209 };
3210
3211 /**
3212 * ipr_show_log_level - Show the adapter's error logging level
3213 * @dev: class device struct
3214 * @buf: buffer
3215 *
3216 * Return value:
3217 * number of bytes printed to buffer
3218 **/
3219 static ssize_t ipr_show_log_level(struct device *dev,
3220 struct device_attribute *attr, char *buf)
3221 {
3222 struct Scsi_Host *shost = class_to_shost(dev);
3223 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3224 unsigned long lock_flags = 0;
3225 int len;
3226
3227 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3228 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3229 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3230 return len;
3231 }
3232
3233 /**
3234 * ipr_store_log_level - Change the adapter's error logging level
3235 * @dev: class device struct
3236 * @buf: buffer
3237 *
3238 * Return value:
3239 * number of bytes printed to buffer
3240 **/
3241 static ssize_t ipr_store_log_level(struct device *dev,
3242 struct device_attribute *attr,
3243 const char *buf, size_t count)
3244 {
3245 struct Scsi_Host *shost = class_to_shost(dev);
3246 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3247 unsigned long lock_flags = 0;
3248
3249 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3250 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3251 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3252 return strlen(buf);
3253 }
3254
3255 static struct device_attribute ipr_log_level_attr = {
3256 .attr = {
3257 .name = "log_level",
3258 .mode = S_IRUGO | S_IWUSR,
3259 },
3260 .show = ipr_show_log_level,
3261 .store = ipr_store_log_level
3262 };
3263
3264 /**
3265 * ipr_store_diagnostics - IOA Diagnostics interface
3266 * @dev: device struct
3267 * @buf: buffer
3268 * @count: buffer size
3269 *
3270 * This function will reset the adapter and wait a reasonable
3271 * amount of time for any errors that the adapter might log.
3272 *
3273 * Return value:
3274 * count on success / other on failure
3275 **/
3276 static ssize_t ipr_store_diagnostics(struct device *dev,
3277 struct device_attribute *attr,
3278 const char *buf, size_t count)
3279 {
3280 struct Scsi_Host *shost = class_to_shost(dev);
3281 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3282 unsigned long lock_flags = 0;
3283 int rc = count;
3284
3285 if (!capable(CAP_SYS_ADMIN))
3286 return -EACCES;
3287
3288 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3289 while(ioa_cfg->in_reset_reload) {
3290 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3291 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3292 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3293 }
3294
3295 ioa_cfg->errors_logged = 0;
3296 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3297
3298 if (ioa_cfg->in_reset_reload) {
3299 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3300 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3301
3302 /* Wait for a second for any errors to be logged */
3303 msleep(1000);
3304 } else {
3305 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3306 return -EIO;
3307 }
3308
3309 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3310 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3311 rc = -EIO;
3312 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3313
3314 return rc;
3315 }
3316
3317 static struct device_attribute ipr_diagnostics_attr = {
3318 .attr = {
3319 .name = "run_diagnostics",
3320 .mode = S_IWUSR,
3321 },
3322 .store = ipr_store_diagnostics
3323 };
3324
3325 /**
3326 * ipr_show_adapter_state - Show the adapter's state
3327 * @class_dev: device struct
3328 * @buf: buffer
3329 *
3330 * Return value:
3331 * number of bytes printed to buffer
3332 **/
3333 static ssize_t ipr_show_adapter_state(struct device *dev,
3334 struct device_attribute *attr, char *buf)
3335 {
3336 struct Scsi_Host *shost = class_to_shost(dev);
3337 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3338 unsigned long lock_flags = 0;
3339 int len;
3340
3341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3342 if (ioa_cfg->ioa_is_dead)
3343 len = snprintf(buf, PAGE_SIZE, "offline\n");
3344 else
3345 len = snprintf(buf, PAGE_SIZE, "online\n");
3346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3347 return len;
3348 }
3349
3350 /**
3351 * ipr_store_adapter_state - Change adapter state
3352 * @dev: device struct
3353 * @buf: buffer
3354 * @count: buffer size
3355 *
3356 * This function will change the adapter's state.
3357 *
3358 * Return value:
3359 * count on success / other on failure
3360 **/
3361 static ssize_t ipr_store_adapter_state(struct device *dev,
3362 struct device_attribute *attr,
3363 const char *buf, size_t count)
3364 {
3365 struct Scsi_Host *shost = class_to_shost(dev);
3366 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3367 unsigned long lock_flags;
3368 int result = count;
3369
3370 if (!capable(CAP_SYS_ADMIN))
3371 return -EACCES;
3372
3373 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3374 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
3375 ioa_cfg->ioa_is_dead = 0;
3376 ioa_cfg->reset_retries = 0;
3377 ioa_cfg->in_ioa_bringdown = 0;
3378 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3379 }
3380 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3381 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3382
3383 return result;
3384 }
3385
3386 static struct device_attribute ipr_ioa_state_attr = {
3387 .attr = {
3388 .name = "online_state",
3389 .mode = S_IRUGO | S_IWUSR,
3390 },
3391 .show = ipr_show_adapter_state,
3392 .store = ipr_store_adapter_state
3393 };
3394
3395 /**
3396 * ipr_store_reset_adapter - Reset the adapter
3397 * @dev: device struct
3398 * @buf: buffer
3399 * @count: buffer size
3400 *
3401 * This function will reset the adapter.
3402 *
3403 * Return value:
3404 * count on success / other on failure
3405 **/
3406 static ssize_t ipr_store_reset_adapter(struct device *dev,
3407 struct device_attribute *attr,
3408 const char *buf, size_t count)
3409 {
3410 struct Scsi_Host *shost = class_to_shost(dev);
3411 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3412 unsigned long lock_flags;
3413 int result = count;
3414
3415 if (!capable(CAP_SYS_ADMIN))
3416 return -EACCES;
3417
3418 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3419 if (!ioa_cfg->in_reset_reload)
3420 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3421 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3422 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3423
3424 return result;
3425 }
3426
3427 static struct device_attribute ipr_ioa_reset_attr = {
3428 .attr = {
3429 .name = "reset_host",
3430 .mode = S_IWUSR,
3431 },
3432 .store = ipr_store_reset_adapter
3433 };
3434
3435 /**
3436 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3437 * @buf_len: buffer length
3438 *
3439 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3440 * list to use for microcode download
3441 *
3442 * Return value:
3443 * pointer to sglist / NULL on failure
3444 **/
3445 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3446 {
3447 int sg_size, order, bsize_elem, num_elem, i, j;
3448 struct ipr_sglist *sglist;
3449 struct scatterlist *scatterlist;
3450 struct page *page;
3451
3452 /* Get the minimum size per scatter/gather element */
3453 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3454
3455 /* Get the actual size per element */
3456 order = get_order(sg_size);
3457
3458 /* Determine the actual number of bytes per element */
3459 bsize_elem = PAGE_SIZE * (1 << order);
3460
3461 /* Determine the actual number of sg entries needed */
3462 if (buf_len % bsize_elem)
3463 num_elem = (buf_len / bsize_elem) + 1;
3464 else
3465 num_elem = buf_len / bsize_elem;
3466
3467 /* Allocate a scatter/gather list for the DMA */
3468 sglist = kzalloc(sizeof(struct ipr_sglist) +
3469 (sizeof(struct scatterlist) * (num_elem - 1)),
3470 GFP_KERNEL);
3471
3472 if (sglist == NULL) {
3473 ipr_trace;
3474 return NULL;
3475 }
3476
3477 scatterlist = sglist->scatterlist;
3478 sg_init_table(scatterlist, num_elem);
3479
3480 sglist->order = order;
3481 sglist->num_sg = num_elem;
3482
3483 /* Allocate a bunch of sg elements */
3484 for (i = 0; i < num_elem; i++) {
3485 page = alloc_pages(GFP_KERNEL, order);
3486 if (!page) {
3487 ipr_trace;
3488
3489 /* Free up what we already allocated */
3490 for (j = i - 1; j >= 0; j--)
3491 __free_pages(sg_page(&scatterlist[j]), order);
3492 kfree(sglist);
3493 return NULL;
3494 }
3495
3496 sg_set_page(&scatterlist[i], page, 0, 0);
3497 }
3498
3499 return sglist;
3500 }
3501
3502 /**
3503 * ipr_free_ucode_buffer - Frees a microcode download buffer
3504 * @p_dnld: scatter/gather list pointer
3505 *
3506 * Free a DMA'able ucode download buffer previously allocated with
3507 * ipr_alloc_ucode_buffer
3508 *
3509 * Return value:
3510 * nothing
3511 **/
3512 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3513 {
3514 int i;
3515
3516 for (i = 0; i < sglist->num_sg; i++)
3517 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3518
3519 kfree(sglist);
3520 }
3521
3522 /**
3523 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3524 * @sglist: scatter/gather list pointer
3525 * @buffer: buffer pointer
3526 * @len: buffer length
3527 *
3528 * Copy a microcode image from a user buffer into a buffer allocated by
3529 * ipr_alloc_ucode_buffer
3530 *
3531 * Return value:
3532 * 0 on success / other on failure
3533 **/
3534 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3535 u8 *buffer, u32 len)
3536 {
3537 int bsize_elem, i, result = 0;
3538 struct scatterlist *scatterlist;
3539 void *kaddr;
3540
3541 /* Determine the actual number of bytes per element */
3542 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3543
3544 scatterlist = sglist->scatterlist;
3545
3546 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3547 struct page *page = sg_page(&scatterlist[i]);
3548
3549 kaddr = kmap(page);
3550 memcpy(kaddr, buffer, bsize_elem);
3551 kunmap(page);
3552
3553 scatterlist[i].length = bsize_elem;
3554
3555 if (result != 0) {
3556 ipr_trace;
3557 return result;
3558 }
3559 }
3560
3561 if (len % bsize_elem) {
3562 struct page *page = sg_page(&scatterlist[i]);
3563
3564 kaddr = kmap(page);
3565 memcpy(kaddr, buffer, len % bsize_elem);
3566 kunmap(page);
3567
3568 scatterlist[i].length = len % bsize_elem;
3569 }
3570
3571 sglist->buffer_len = len;
3572 return result;
3573 }
3574
3575 /**
3576 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3577 * @ipr_cmd: ipr command struct
3578 * @sglist: scatter/gather list
3579 *
3580 * Builds a microcode download IOA data list (IOADL).
3581 *
3582 **/
3583 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3584 struct ipr_sglist *sglist)
3585 {
3586 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3587 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3588 struct scatterlist *scatterlist = sglist->scatterlist;
3589 int i;
3590
3591 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3592 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3593 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3594
3595 ioarcb->ioadl_len =
3596 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3597 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3598 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3599 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3600 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3601 }
3602
3603 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3604 }
3605
3606 /**
3607 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3608 * @ipr_cmd: ipr command struct
3609 * @sglist: scatter/gather list
3610 *
3611 * Builds a microcode download IOA data list (IOADL).
3612 *
3613 **/
3614 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3615 struct ipr_sglist *sglist)
3616 {
3617 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3618 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3619 struct scatterlist *scatterlist = sglist->scatterlist;
3620 int i;
3621
3622 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3623 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3624 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3625
3626 ioarcb->ioadl_len =
3627 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3628
3629 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3630 ioadl[i].flags_and_data_len =
3631 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3632 ioadl[i].address =
3633 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3634 }
3635
3636 ioadl[i-1].flags_and_data_len |=
3637 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3638 }
3639
3640 /**
3641 * ipr_update_ioa_ucode - Update IOA's microcode
3642 * @ioa_cfg: ioa config struct
3643 * @sglist: scatter/gather list
3644 *
3645 * Initiate an adapter reset to update the IOA's microcode
3646 *
3647 * Return value:
3648 * 0 on success / -EIO on failure
3649 **/
3650 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3651 struct ipr_sglist *sglist)
3652 {
3653 unsigned long lock_flags;
3654
3655 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3656 while(ioa_cfg->in_reset_reload) {
3657 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3658 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3659 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3660 }
3661
3662 if (ioa_cfg->ucode_sglist) {
3663 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3664 dev_err(&ioa_cfg->pdev->dev,
3665 "Microcode download already in progress\n");
3666 return -EIO;
3667 }
3668
3669 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3670 sglist->num_sg, DMA_TO_DEVICE);
3671
3672 if (!sglist->num_dma_sg) {
3673 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3674 dev_err(&ioa_cfg->pdev->dev,
3675 "Failed to map microcode download buffer!\n");
3676 return -EIO;
3677 }
3678
3679 ioa_cfg->ucode_sglist = sglist;
3680 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3681 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3682 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3683
3684 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3685 ioa_cfg->ucode_sglist = NULL;
3686 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3687 return 0;
3688 }
3689
3690 /**
3691 * ipr_store_update_fw - Update the firmware on the adapter
3692 * @class_dev: device struct
3693 * @buf: buffer
3694 * @count: buffer size
3695 *
3696 * This function will update the firmware on the adapter.
3697 *
3698 * Return value:
3699 * count on success / other on failure
3700 **/
3701 static ssize_t ipr_store_update_fw(struct device *dev,
3702 struct device_attribute *attr,
3703 const char *buf, size_t count)
3704 {
3705 struct Scsi_Host *shost = class_to_shost(dev);
3706 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3707 struct ipr_ucode_image_header *image_hdr;
3708 const struct firmware *fw_entry;
3709 struct ipr_sglist *sglist;
3710 char fname[100];
3711 char *src;
3712 int len, result, dnld_size;
3713
3714 if (!capable(CAP_SYS_ADMIN))
3715 return -EACCES;
3716
3717 len = snprintf(fname, 99, "%s", buf);
3718 fname[len-1] = '\0';
3719
3720 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3721 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3722 return -EIO;
3723 }
3724
3725 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3726
3727 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3728 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3729 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3730 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3731 release_firmware(fw_entry);
3732 return -EINVAL;
3733 }
3734
3735 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3736 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3737 sglist = ipr_alloc_ucode_buffer(dnld_size);
3738
3739 if (!sglist) {
3740 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3741 release_firmware(fw_entry);
3742 return -ENOMEM;
3743 }
3744
3745 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3746
3747 if (result) {
3748 dev_err(&ioa_cfg->pdev->dev,
3749 "Microcode buffer copy to DMA buffer failed\n");
3750 goto out;
3751 }
3752
3753 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3754
3755 if (!result)
3756 result = count;
3757 out:
3758 ipr_free_ucode_buffer(sglist);
3759 release_firmware(fw_entry);
3760 return result;
3761 }
3762
3763 static struct device_attribute ipr_update_fw_attr = {
3764 .attr = {
3765 .name = "update_fw",
3766 .mode = S_IWUSR,
3767 },
3768 .store = ipr_store_update_fw
3769 };
3770
3771 /**
3772 * ipr_show_fw_type - Show the adapter's firmware type.
3773 * @dev: class device struct
3774 * @buf: buffer
3775 *
3776 * Return value:
3777 * number of bytes printed to buffer
3778 **/
3779 static ssize_t ipr_show_fw_type(struct device *dev,
3780 struct device_attribute *attr, char *buf)
3781 {
3782 struct Scsi_Host *shost = class_to_shost(dev);
3783 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3784 unsigned long lock_flags = 0;
3785 int len;
3786
3787 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3788 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
3789 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3790 return len;
3791 }
3792
3793 static struct device_attribute ipr_ioa_fw_type_attr = {
3794 .attr = {
3795 .name = "fw_type",
3796 .mode = S_IRUGO,
3797 },
3798 .show = ipr_show_fw_type
3799 };
3800
3801 static struct device_attribute *ipr_ioa_attrs[] = {
3802 &ipr_fw_version_attr,
3803 &ipr_log_level_attr,
3804 &ipr_diagnostics_attr,
3805 &ipr_ioa_state_attr,
3806 &ipr_ioa_reset_attr,
3807 &ipr_update_fw_attr,
3808 &ipr_ioa_fw_type_attr,
3809 NULL,
3810 };
3811
3812 #ifdef CONFIG_SCSI_IPR_DUMP
3813 /**
3814 * ipr_read_dump - Dump the adapter
3815 * @filp: open sysfs file
3816 * @kobj: kobject struct
3817 * @bin_attr: bin_attribute struct
3818 * @buf: buffer
3819 * @off: offset
3820 * @count: buffer size
3821 *
3822 * Return value:
3823 * number of bytes printed to buffer
3824 **/
3825 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
3826 struct bin_attribute *bin_attr,
3827 char *buf, loff_t off, size_t count)
3828 {
3829 struct device *cdev = container_of(kobj, struct device, kobj);
3830 struct Scsi_Host *shost = class_to_shost(cdev);
3831 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3832 struct ipr_dump *dump;
3833 unsigned long lock_flags = 0;
3834 char *src;
3835 int len;
3836 size_t rc = count;
3837
3838 if (!capable(CAP_SYS_ADMIN))
3839 return -EACCES;
3840
3841 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3842 dump = ioa_cfg->dump;
3843
3844 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3845 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3846 return 0;
3847 }
3848 kref_get(&dump->kref);
3849 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3850
3851 if (off > dump->driver_dump.hdr.len) {
3852 kref_put(&dump->kref, ipr_release_dump);
3853 return 0;
3854 }
3855
3856 if (off + count > dump->driver_dump.hdr.len) {
3857 count = dump->driver_dump.hdr.len - off;
3858 rc = count;
3859 }
3860
3861 if (count && off < sizeof(dump->driver_dump)) {
3862 if (off + count > sizeof(dump->driver_dump))
3863 len = sizeof(dump->driver_dump) - off;
3864 else
3865 len = count;
3866 src = (u8 *)&dump->driver_dump + off;
3867 memcpy(buf, src, len);
3868 buf += len;
3869 off += len;
3870 count -= len;
3871 }
3872
3873 off -= sizeof(dump->driver_dump);
3874
3875 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3876 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3877 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3878 else
3879 len = count;
3880 src = (u8 *)&dump->ioa_dump + off;
3881 memcpy(buf, src, len);
3882 buf += len;
3883 off += len;
3884 count -= len;
3885 }
3886
3887 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3888
3889 while (count) {
3890 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3891 len = PAGE_ALIGN(off) - off;
3892 else
3893 len = count;
3894 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3895 src += off & ~PAGE_MASK;
3896 memcpy(buf, src, len);
3897 buf += len;
3898 off += len;
3899 count -= len;
3900 }
3901
3902 kref_put(&dump->kref, ipr_release_dump);
3903 return rc;
3904 }
3905
3906 /**
3907 * ipr_alloc_dump - Prepare for adapter dump
3908 * @ioa_cfg: ioa config struct
3909 *
3910 * Return value:
3911 * 0 on success / other on failure
3912 **/
3913 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3914 {
3915 struct ipr_dump *dump;
3916 unsigned long lock_flags = 0;
3917
3918 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3919
3920 if (!dump) {
3921 ipr_err("Dump memory allocation failed\n");
3922 return -ENOMEM;
3923 }
3924
3925 kref_init(&dump->kref);
3926 dump->ioa_cfg = ioa_cfg;
3927
3928 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3929
3930 if (INACTIVE != ioa_cfg->sdt_state) {
3931 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3932 kfree(dump);
3933 return 0;
3934 }
3935
3936 ioa_cfg->dump = dump;
3937 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3938 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3939 ioa_cfg->dump_taken = 1;
3940 schedule_work(&ioa_cfg->work_q);
3941 }
3942 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3943
3944 return 0;
3945 }
3946
3947 /**
3948 * ipr_free_dump - Free adapter dump memory
3949 * @ioa_cfg: ioa config struct
3950 *
3951 * Return value:
3952 * 0 on success / other on failure
3953 **/
3954 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3955 {
3956 struct ipr_dump *dump;
3957 unsigned long lock_flags = 0;
3958
3959 ENTER;
3960
3961 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3962 dump = ioa_cfg->dump;
3963 if (!dump) {
3964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3965 return 0;
3966 }
3967
3968 ioa_cfg->dump = NULL;
3969 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3970
3971 kref_put(&dump->kref, ipr_release_dump);
3972
3973 LEAVE;
3974 return 0;
3975 }
3976
3977 /**
3978 * ipr_write_dump - Setup dump state of adapter
3979 * @filp: open sysfs file
3980 * @kobj: kobject struct
3981 * @bin_attr: bin_attribute struct
3982 * @buf: buffer
3983 * @off: offset
3984 * @count: buffer size
3985 *
3986 * Return value:
3987 * number of bytes printed to buffer
3988 **/
3989 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
3990 struct bin_attribute *bin_attr,
3991 char *buf, loff_t off, size_t count)
3992 {
3993 struct device *cdev = container_of(kobj, struct device, kobj);
3994 struct Scsi_Host *shost = class_to_shost(cdev);
3995 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3996 int rc;
3997
3998 if (!capable(CAP_SYS_ADMIN))
3999 return -EACCES;
4000
4001 if (buf[0] == '1')
4002 rc = ipr_alloc_dump(ioa_cfg);
4003 else if (buf[0] == '0')
4004 rc = ipr_free_dump(ioa_cfg);
4005 else
4006 return -EINVAL;
4007
4008 if (rc)
4009 return rc;
4010 else
4011 return count;
4012 }
4013
4014 static struct bin_attribute ipr_dump_attr = {
4015 .attr = {
4016 .name = "dump",
4017 .mode = S_IRUSR | S_IWUSR,
4018 },
4019 .size = 0,
4020 .read = ipr_read_dump,
4021 .write = ipr_write_dump
4022 };
4023 #else
4024 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4025 #endif
4026
4027 /**
4028 * ipr_change_queue_depth - Change the device's queue depth
4029 * @sdev: scsi device struct
4030 * @qdepth: depth to set
4031 * @reason: calling context
4032 *
4033 * Return value:
4034 * actual depth set
4035 **/
4036 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
4037 int reason)
4038 {
4039 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4040 struct ipr_resource_entry *res;
4041 unsigned long lock_flags = 0;
4042
4043 if (reason != SCSI_QDEPTH_DEFAULT)
4044 return -EOPNOTSUPP;
4045
4046 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4047 res = (struct ipr_resource_entry *)sdev->hostdata;
4048
4049 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4050 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4051 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4052
4053 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4054 return sdev->queue_depth;
4055 }
4056
4057 /**
4058 * ipr_change_queue_type - Change the device's queue type
4059 * @dsev: scsi device struct
4060 * @tag_type: type of tags to use
4061 *
4062 * Return value:
4063 * actual queue type set
4064 **/
4065 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4066 {
4067 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4068 struct ipr_resource_entry *res;
4069 unsigned long lock_flags = 0;
4070
4071 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4072 res = (struct ipr_resource_entry *)sdev->hostdata;
4073
4074 if (res) {
4075 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4076 /*
4077 * We don't bother quiescing the device here since the
4078 * adapter firmware does it for us.
4079 */
4080 scsi_set_tag_type(sdev, tag_type);
4081
4082 if (tag_type)
4083 scsi_activate_tcq(sdev, sdev->queue_depth);
4084 else
4085 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4086 } else
4087 tag_type = 0;
4088 } else
4089 tag_type = 0;
4090
4091 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4092 return tag_type;
4093 }
4094
4095 /**
4096 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4097 * @dev: device struct
4098 * @attr: device attribute structure
4099 * @buf: buffer
4100 *
4101 * Return value:
4102 * number of bytes printed to buffer
4103 **/
4104 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4105 {
4106 struct scsi_device *sdev = to_scsi_device(dev);
4107 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4108 struct ipr_resource_entry *res;
4109 unsigned long lock_flags = 0;
4110 ssize_t len = -ENXIO;
4111
4112 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4113 res = (struct ipr_resource_entry *)sdev->hostdata;
4114 if (res)
4115 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4116 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4117 return len;
4118 }
4119
4120 static struct device_attribute ipr_adapter_handle_attr = {
4121 .attr = {
4122 .name = "adapter_handle",
4123 .mode = S_IRUSR,
4124 },
4125 .show = ipr_show_adapter_handle
4126 };
4127
4128 /**
4129 * ipr_show_resource_path - Show the resource path or the resource address for
4130 * this device.
4131 * @dev: device struct
4132 * @attr: device attribute structure
4133 * @buf: buffer
4134 *
4135 * Return value:
4136 * number of bytes printed to buffer
4137 **/
4138 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4139 {
4140 struct scsi_device *sdev = to_scsi_device(dev);
4141 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4142 struct ipr_resource_entry *res;
4143 unsigned long lock_flags = 0;
4144 ssize_t len = -ENXIO;
4145 char buffer[IPR_MAX_RES_PATH_LENGTH];
4146
4147 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4148 res = (struct ipr_resource_entry *)sdev->hostdata;
4149 if (res && ioa_cfg->sis64)
4150 len = snprintf(buf, PAGE_SIZE, "%s\n",
4151 ipr_format_res_path(res->res_path, buffer,
4152 sizeof(buffer)));
4153 else if (res)
4154 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4155 res->bus, res->target, res->lun);
4156
4157 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4158 return len;
4159 }
4160
4161 static struct device_attribute ipr_resource_path_attr = {
4162 .attr = {
4163 .name = "resource_path",
4164 .mode = S_IRUGO,
4165 },
4166 .show = ipr_show_resource_path
4167 };
4168
4169 /**
4170 * ipr_show_device_id - Show the device_id for this device.
4171 * @dev: device struct
4172 * @attr: device attribute structure
4173 * @buf: buffer
4174 *
4175 * Return value:
4176 * number of bytes printed to buffer
4177 **/
4178 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4179 {
4180 struct scsi_device *sdev = to_scsi_device(dev);
4181 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4182 struct ipr_resource_entry *res;
4183 unsigned long lock_flags = 0;
4184 ssize_t len = -ENXIO;
4185
4186 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4187 res = (struct ipr_resource_entry *)sdev->hostdata;
4188 if (res && ioa_cfg->sis64)
4189 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id);
4190 else if (res)
4191 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4192
4193 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4194 return len;
4195 }
4196
4197 static struct device_attribute ipr_device_id_attr = {
4198 .attr = {
4199 .name = "device_id",
4200 .mode = S_IRUGO,
4201 },
4202 .show = ipr_show_device_id
4203 };
4204
4205 /**
4206 * ipr_show_resource_type - Show the resource type for this device.
4207 * @dev: device struct
4208 * @attr: device attribute structure
4209 * @buf: buffer
4210 *
4211 * Return value:
4212 * number of bytes printed to buffer
4213 **/
4214 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4215 {
4216 struct scsi_device *sdev = to_scsi_device(dev);
4217 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4218 struct ipr_resource_entry *res;
4219 unsigned long lock_flags = 0;
4220 ssize_t len = -ENXIO;
4221
4222 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4223 res = (struct ipr_resource_entry *)sdev->hostdata;
4224
4225 if (res)
4226 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4227
4228 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4229 return len;
4230 }
4231
4232 static struct device_attribute ipr_resource_type_attr = {
4233 .attr = {
4234 .name = "resource_type",
4235 .mode = S_IRUGO,
4236 },
4237 .show = ipr_show_resource_type
4238 };
4239
4240 static struct device_attribute *ipr_dev_attrs[] = {
4241 &ipr_adapter_handle_attr,
4242 &ipr_resource_path_attr,
4243 &ipr_device_id_attr,
4244 &ipr_resource_type_attr,
4245 NULL,
4246 };
4247
4248 /**
4249 * ipr_biosparam - Return the HSC mapping
4250 * @sdev: scsi device struct
4251 * @block_device: block device pointer
4252 * @capacity: capacity of the device
4253 * @parm: Array containing returned HSC values.
4254 *
4255 * This function generates the HSC parms that fdisk uses.
4256 * We want to make sure we return something that places partitions
4257 * on 4k boundaries for best performance with the IOA.
4258 *
4259 * Return value:
4260 * 0 on success
4261 **/
4262 static int ipr_biosparam(struct scsi_device *sdev,
4263 struct block_device *block_device,
4264 sector_t capacity, int *parm)
4265 {
4266 int heads, sectors;
4267 sector_t cylinders;
4268
4269 heads = 128;
4270 sectors = 32;
4271
4272 cylinders = capacity;
4273 sector_div(cylinders, (128 * 32));
4274
4275 /* return result */
4276 parm[0] = heads;
4277 parm[1] = sectors;
4278 parm[2] = cylinders;
4279
4280 return 0;
4281 }
4282
4283 /**
4284 * ipr_find_starget - Find target based on bus/target.
4285 * @starget: scsi target struct
4286 *
4287 * Return value:
4288 * resource entry pointer if found / NULL if not found
4289 **/
4290 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4291 {
4292 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4293 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4294 struct ipr_resource_entry *res;
4295
4296 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4297 if ((res->bus == starget->channel) &&
4298 (res->target == starget->id) &&
4299 (res->lun == 0)) {
4300 return res;
4301 }
4302 }
4303
4304 return NULL;
4305 }
4306
4307 static struct ata_port_info sata_port_info;
4308
4309 /**
4310 * ipr_target_alloc - Prepare for commands to a SCSI target
4311 * @starget: scsi target struct
4312 *
4313 * If the device is a SATA device, this function allocates an
4314 * ATA port with libata, else it does nothing.
4315 *
4316 * Return value:
4317 * 0 on success / non-0 on failure
4318 **/
4319 static int ipr_target_alloc(struct scsi_target *starget)
4320 {
4321 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4322 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4323 struct ipr_sata_port *sata_port;
4324 struct ata_port *ap;
4325 struct ipr_resource_entry *res;
4326 unsigned long lock_flags;
4327
4328 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4329 res = ipr_find_starget(starget);
4330 starget->hostdata = NULL;
4331
4332 if (res && ipr_is_gata(res)) {
4333 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4334 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4335 if (!sata_port)
4336 return -ENOMEM;
4337
4338 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4339 if (ap) {
4340 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4341 sata_port->ioa_cfg = ioa_cfg;
4342 sata_port->ap = ap;
4343 sata_port->res = res;
4344
4345 res->sata_port = sata_port;
4346 ap->private_data = sata_port;
4347 starget->hostdata = sata_port;
4348 } else {
4349 kfree(sata_port);
4350 return -ENOMEM;
4351 }
4352 }
4353 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4354
4355 return 0;
4356 }
4357
4358 /**
4359 * ipr_target_destroy - Destroy a SCSI target
4360 * @starget: scsi target struct
4361 *
4362 * If the device was a SATA device, this function frees the libata
4363 * ATA port, else it does nothing.
4364 *
4365 **/
4366 static void ipr_target_destroy(struct scsi_target *starget)
4367 {
4368 struct ipr_sata_port *sata_port = starget->hostdata;
4369 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4370 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4371
4372 if (ioa_cfg->sis64) {
4373 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4374 clear_bit(starget->id, ioa_cfg->array_ids);
4375 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4376 clear_bit(starget->id, ioa_cfg->vset_ids);
4377 else if (starget->channel == 0)
4378 clear_bit(starget->id, ioa_cfg->target_ids);
4379 }
4380
4381 if (sata_port) {
4382 starget->hostdata = NULL;
4383 ata_sas_port_destroy(sata_port->ap);
4384 kfree(sata_port);
4385 }
4386 }
4387
4388 /**
4389 * ipr_find_sdev - Find device based on bus/target/lun.
4390 * @sdev: scsi device struct
4391 *
4392 * Return value:
4393 * resource entry pointer if found / NULL if not found
4394 **/
4395 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4396 {
4397 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4398 struct ipr_resource_entry *res;
4399
4400 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4401 if ((res->bus == sdev->channel) &&
4402 (res->target == sdev->id) &&
4403 (res->lun == sdev->lun))
4404 return res;
4405 }
4406
4407 return NULL;
4408 }
4409
4410 /**
4411 * ipr_slave_destroy - Unconfigure a SCSI device
4412 * @sdev: scsi device struct
4413 *
4414 * Return value:
4415 * nothing
4416 **/
4417 static void ipr_slave_destroy(struct scsi_device *sdev)
4418 {
4419 struct ipr_resource_entry *res;
4420 struct ipr_ioa_cfg *ioa_cfg;
4421 unsigned long lock_flags = 0;
4422
4423 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4424
4425 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4426 res = (struct ipr_resource_entry *) sdev->hostdata;
4427 if (res) {
4428 if (res->sata_port)
4429 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4430 sdev->hostdata = NULL;
4431 res->sdev = NULL;
4432 res->sata_port = NULL;
4433 }
4434 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4435 }
4436
4437 /**
4438 * ipr_slave_configure - Configure a SCSI device
4439 * @sdev: scsi device struct
4440 *
4441 * This function configures the specified scsi device.
4442 *
4443 * Return value:
4444 * 0 on success
4445 **/
4446 static int ipr_slave_configure(struct scsi_device *sdev)
4447 {
4448 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4449 struct ipr_resource_entry *res;
4450 struct ata_port *ap = NULL;
4451 unsigned long lock_flags = 0;
4452 char buffer[IPR_MAX_RES_PATH_LENGTH];
4453
4454 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4455 res = sdev->hostdata;
4456 if (res) {
4457 if (ipr_is_af_dasd_device(res))
4458 sdev->type = TYPE_RAID;
4459 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4460 sdev->scsi_level = 4;
4461 sdev->no_uld_attach = 1;
4462 }
4463 if (ipr_is_vset_device(res)) {
4464 blk_queue_rq_timeout(sdev->request_queue,
4465 IPR_VSET_RW_TIMEOUT);
4466 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4467 }
4468 if (ipr_is_gata(res) && res->sata_port)
4469 ap = res->sata_port->ap;
4470 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4471
4472 if (ap) {
4473 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
4474 ata_sas_slave_configure(sdev, ap);
4475 } else
4476 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4477 if (ioa_cfg->sis64)
4478 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4479 ipr_format_res_path(res->res_path, buffer,
4480 sizeof(buffer)));
4481 return 0;
4482 }
4483 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4484 return 0;
4485 }
4486
4487 /**
4488 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4489 * @sdev: scsi device struct
4490 *
4491 * This function initializes an ATA port so that future commands
4492 * sent through queuecommand will work.
4493 *
4494 * Return value:
4495 * 0 on success
4496 **/
4497 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4498 {
4499 struct ipr_sata_port *sata_port = NULL;
4500 int rc = -ENXIO;
4501
4502 ENTER;
4503 if (sdev->sdev_target)
4504 sata_port = sdev->sdev_target->hostdata;
4505 if (sata_port)
4506 rc = ata_sas_port_init(sata_port->ap);
4507 if (rc)
4508 ipr_slave_destroy(sdev);
4509
4510 LEAVE;
4511 return rc;
4512 }
4513
4514 /**
4515 * ipr_slave_alloc - Prepare for commands to a device.
4516 * @sdev: scsi device struct
4517 *
4518 * This function saves a pointer to the resource entry
4519 * in the scsi device struct if the device exists. We
4520 * can then use this pointer in ipr_queuecommand when
4521 * handling new commands.
4522 *
4523 * Return value:
4524 * 0 on success / -ENXIO if device does not exist
4525 **/
4526 static int ipr_slave_alloc(struct scsi_device *sdev)
4527 {
4528 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4529 struct ipr_resource_entry *res;
4530 unsigned long lock_flags;
4531 int rc = -ENXIO;
4532
4533 sdev->hostdata = NULL;
4534
4535 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4536
4537 res = ipr_find_sdev(sdev);
4538 if (res) {
4539 res->sdev = sdev;
4540 res->add_to_ml = 0;
4541 res->in_erp = 0;
4542 sdev->hostdata = res;
4543 if (!ipr_is_naca_model(res))
4544 res->needs_sync_complete = 1;
4545 rc = 0;
4546 if (ipr_is_gata(res)) {
4547 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4548 return ipr_ata_slave_alloc(sdev);
4549 }
4550 }
4551
4552 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4553
4554 return rc;
4555 }
4556
4557 /**
4558 * ipr_eh_host_reset - Reset the host adapter
4559 * @scsi_cmd: scsi command struct
4560 *
4561 * Return value:
4562 * SUCCESS / FAILED
4563 **/
4564 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
4565 {
4566 struct ipr_ioa_cfg *ioa_cfg;
4567 int rc;
4568
4569 ENTER;
4570 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4571
4572 dev_err(&ioa_cfg->pdev->dev,
4573 "Adapter being reset as a result of error recovery.\n");
4574
4575 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4576 ioa_cfg->sdt_state = GET_DUMP;
4577
4578 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4579
4580 LEAVE;
4581 return rc;
4582 }
4583
4584 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
4585 {
4586 int rc;
4587
4588 spin_lock_irq(cmd->device->host->host_lock);
4589 rc = __ipr_eh_host_reset(cmd);
4590 spin_unlock_irq(cmd->device->host->host_lock);
4591
4592 return rc;
4593 }
4594
4595 /**
4596 * ipr_device_reset - Reset the device
4597 * @ioa_cfg: ioa config struct
4598 * @res: resource entry struct
4599 *
4600 * This function issues a device reset to the affected device.
4601 * If the device is a SCSI device, a LUN reset will be sent
4602 * to the device first. If that does not work, a target reset
4603 * will be sent. If the device is a SATA device, a PHY reset will
4604 * be sent.
4605 *
4606 * Return value:
4607 * 0 on success / non-zero on failure
4608 **/
4609 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4610 struct ipr_resource_entry *res)
4611 {
4612 struct ipr_cmnd *ipr_cmd;
4613 struct ipr_ioarcb *ioarcb;
4614 struct ipr_cmd_pkt *cmd_pkt;
4615 struct ipr_ioarcb_ata_regs *regs;
4616 u32 ioasc;
4617
4618 ENTER;
4619 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4620 ioarcb = &ipr_cmd->ioarcb;
4621 cmd_pkt = &ioarcb->cmd_pkt;
4622
4623 if (ipr_cmd->ioa_cfg->sis64) {
4624 regs = &ipr_cmd->i.ata_ioadl.regs;
4625 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4626 } else
4627 regs = &ioarcb->u.add_data.u.regs;
4628
4629 ioarcb->res_handle = res->res_handle;
4630 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4631 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4632 if (ipr_is_gata(res)) {
4633 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
4634 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
4635 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4636 }
4637
4638 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4639 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4640 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4641 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
4642 if (ipr_cmd->ioa_cfg->sis64)
4643 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
4644 sizeof(struct ipr_ioasa_gata));
4645 else
4646 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
4647 sizeof(struct ipr_ioasa_gata));
4648 }
4649
4650 LEAVE;
4651 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
4652 }
4653
4654 /**
4655 * ipr_sata_reset - Reset the SATA port
4656 * @link: SATA link to reset
4657 * @classes: class of the attached device
4658 *
4659 * This function issues a SATA phy reset to the affected ATA link.
4660 *
4661 * Return value:
4662 * 0 on success / non-zero on failure
4663 **/
4664 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
4665 unsigned long deadline)
4666 {
4667 struct ipr_sata_port *sata_port = link->ap->private_data;
4668 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4669 struct ipr_resource_entry *res;
4670 unsigned long lock_flags = 0;
4671 int rc = -ENXIO;
4672
4673 ENTER;
4674 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4675 while(ioa_cfg->in_reset_reload) {
4676 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4677 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4678 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4679 }
4680
4681 res = sata_port->res;
4682 if (res) {
4683 rc = ipr_device_reset(ioa_cfg, res);
4684 *classes = res->ata_class;
4685 }
4686
4687 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4688 LEAVE;
4689 return rc;
4690 }
4691
4692 /**
4693 * ipr_eh_dev_reset - Reset the device
4694 * @scsi_cmd: scsi command struct
4695 *
4696 * This function issues a device reset to the affected device.
4697 * A LUN reset will be sent to the device first. If that does
4698 * not work, a target reset will be sent.
4699 *
4700 * Return value:
4701 * SUCCESS / FAILED
4702 **/
4703 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
4704 {
4705 struct ipr_cmnd *ipr_cmd;
4706 struct ipr_ioa_cfg *ioa_cfg;
4707 struct ipr_resource_entry *res;
4708 struct ata_port *ap;
4709 int rc = 0;
4710
4711 ENTER;
4712 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4713 res = scsi_cmd->device->hostdata;
4714
4715 if (!res)
4716 return FAILED;
4717
4718 /*
4719 * If we are currently going through reset/reload, return failed. This will force the
4720 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
4721 * reset to complete
4722 */
4723 if (ioa_cfg->in_reset_reload)
4724 return FAILED;
4725 if (ioa_cfg->ioa_is_dead)
4726 return FAILED;
4727
4728 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4729 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4730 if (ipr_cmd->scsi_cmd)
4731 ipr_cmd->done = ipr_scsi_eh_done;
4732 if (ipr_cmd->qc)
4733 ipr_cmd->done = ipr_sata_eh_done;
4734 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
4735 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4736 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4737 }
4738 }
4739 }
4740
4741 res->resetting_device = 1;
4742 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
4743
4744 if (ipr_is_gata(res) && res->sata_port) {
4745 ap = res->sata_port->ap;
4746 spin_unlock_irq(scsi_cmd->device->host->host_lock);
4747 ata_std_error_handler(ap);
4748 spin_lock_irq(scsi_cmd->device->host->host_lock);
4749
4750 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4751 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4752 rc = -EIO;
4753 break;
4754 }
4755 }
4756 } else
4757 rc = ipr_device_reset(ioa_cfg, res);
4758 res->resetting_device = 0;
4759
4760 LEAVE;
4761 return (rc ? FAILED : SUCCESS);
4762 }
4763
4764 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
4765 {
4766 int rc;
4767
4768 spin_lock_irq(cmd->device->host->host_lock);
4769 rc = __ipr_eh_dev_reset(cmd);
4770 spin_unlock_irq(cmd->device->host->host_lock);
4771
4772 return rc;
4773 }
4774
4775 /**
4776 * ipr_bus_reset_done - Op done function for bus reset.
4777 * @ipr_cmd: ipr command struct
4778 *
4779 * This function is the op done function for a bus reset
4780 *
4781 * Return value:
4782 * none
4783 **/
4784 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
4785 {
4786 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4787 struct ipr_resource_entry *res;
4788
4789 ENTER;
4790 if (!ioa_cfg->sis64)
4791 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4792 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
4793 scsi_report_bus_reset(ioa_cfg->host, res->bus);
4794 break;
4795 }
4796 }
4797
4798 /*
4799 * If abort has not completed, indicate the reset has, else call the
4800 * abort's done function to wake the sleeping eh thread
4801 */
4802 if (ipr_cmd->sibling->sibling)
4803 ipr_cmd->sibling->sibling = NULL;
4804 else
4805 ipr_cmd->sibling->done(ipr_cmd->sibling);
4806
4807 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4808 LEAVE;
4809 }
4810
4811 /**
4812 * ipr_abort_timeout - An abort task has timed out
4813 * @ipr_cmd: ipr command struct
4814 *
4815 * This function handles when an abort task times out. If this
4816 * happens we issue a bus reset since we have resources tied
4817 * up that must be freed before returning to the midlayer.
4818 *
4819 * Return value:
4820 * none
4821 **/
4822 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4823 {
4824 struct ipr_cmnd *reset_cmd;
4825 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4826 struct ipr_cmd_pkt *cmd_pkt;
4827 unsigned long lock_flags = 0;
4828
4829 ENTER;
4830 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4831 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4832 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4833 return;
4834 }
4835
4836 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4837 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4838 ipr_cmd->sibling = reset_cmd;
4839 reset_cmd->sibling = ipr_cmd;
4840 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4841 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4842 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4843 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4844 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4845
4846 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4847 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4848 LEAVE;
4849 }
4850
4851 /**
4852 * ipr_cancel_op - Cancel specified op
4853 * @scsi_cmd: scsi command struct
4854 *
4855 * This function cancels specified op.
4856 *
4857 * Return value:
4858 * SUCCESS / FAILED
4859 **/
4860 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4861 {
4862 struct ipr_cmnd *ipr_cmd;
4863 struct ipr_ioa_cfg *ioa_cfg;
4864 struct ipr_resource_entry *res;
4865 struct ipr_cmd_pkt *cmd_pkt;
4866 u32 ioasc;
4867 int op_found = 0;
4868
4869 ENTER;
4870 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4871 res = scsi_cmd->device->hostdata;
4872
4873 /* If we are currently going through reset/reload, return failed.
4874 * This will force the mid-layer to call ipr_eh_host_reset,
4875 * which will then go to sleep and wait for the reset to complete
4876 */
4877 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4878 return FAILED;
4879 if (!res || !ipr_is_gscsi(res))
4880 return FAILED;
4881
4882 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4883 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4884 ipr_cmd->done = ipr_scsi_eh_done;
4885 op_found = 1;
4886 break;
4887 }
4888 }
4889
4890 if (!op_found)
4891 return SUCCESS;
4892
4893 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4894 ipr_cmd->ioarcb.res_handle = res->res_handle;
4895 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4896 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4897 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4898 ipr_cmd->u.sdev = scsi_cmd->device;
4899
4900 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4901 scsi_cmd->cmnd[0]);
4902 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4903 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4904
4905 /*
4906 * If the abort task timed out and we sent a bus reset, we will get
4907 * one the following responses to the abort
4908 */
4909 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4910 ioasc = 0;
4911 ipr_trace;
4912 }
4913
4914 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4915 if (!ipr_is_naca_model(res))
4916 res->needs_sync_complete = 1;
4917
4918 LEAVE;
4919 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4920 }
4921
4922 /**
4923 * ipr_eh_abort - Abort a single op
4924 * @scsi_cmd: scsi command struct
4925 *
4926 * Return value:
4927 * SUCCESS / FAILED
4928 **/
4929 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4930 {
4931 unsigned long flags;
4932 int rc;
4933
4934 ENTER;
4935
4936 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4937 rc = ipr_cancel_op(scsi_cmd);
4938 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4939
4940 LEAVE;
4941 return rc;
4942 }
4943
4944 /**
4945 * ipr_handle_other_interrupt - Handle "other" interrupts
4946 * @ioa_cfg: ioa config struct
4947 * @int_reg: interrupt register
4948 *
4949 * Return value:
4950 * IRQ_NONE / IRQ_HANDLED
4951 **/
4952 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4953 volatile u32 int_reg)
4954 {
4955 irqreturn_t rc = IRQ_HANDLED;
4956
4957 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4958 /* Mask the interrupt */
4959 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4960
4961 /* Clear the interrupt */
4962 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4963 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4964
4965 list_del(&ioa_cfg->reset_cmd->queue);
4966 del_timer(&ioa_cfg->reset_cmd->timer);
4967 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4968 } else {
4969 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4970 ioa_cfg->ioa_unit_checked = 1;
4971 else
4972 dev_err(&ioa_cfg->pdev->dev,
4973 "Permanent IOA failure. 0x%08X\n", int_reg);
4974
4975 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4976 ioa_cfg->sdt_state = GET_DUMP;
4977
4978 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4979 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4980 }
4981
4982 return rc;
4983 }
4984
4985 /**
4986 * ipr_isr_eh - Interrupt service routine error handler
4987 * @ioa_cfg: ioa config struct
4988 * @msg: message to log
4989 *
4990 * Return value:
4991 * none
4992 **/
4993 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
4994 {
4995 ioa_cfg->errors_logged++;
4996 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
4997
4998 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4999 ioa_cfg->sdt_state = GET_DUMP;
5000
5001 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5002 }
5003
5004 /**
5005 * ipr_isr - Interrupt service routine
5006 * @irq: irq number
5007 * @devp: pointer to ioa config struct
5008 *
5009 * Return value:
5010 * IRQ_NONE / IRQ_HANDLED
5011 **/
5012 static irqreturn_t ipr_isr(int irq, void *devp)
5013 {
5014 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
5015 unsigned long lock_flags = 0;
5016 volatile u32 int_reg, int_mask_reg;
5017 u32 ioasc;
5018 u16 cmd_index;
5019 int num_hrrq = 0;
5020 struct ipr_cmnd *ipr_cmd;
5021 irqreturn_t rc = IRQ_NONE;
5022
5023 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5024
5025 /* If interrupts are disabled, ignore the interrupt */
5026 if (!ioa_cfg->allow_interrupts) {
5027 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5028 return IRQ_NONE;
5029 }
5030
5031 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5032 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
5033
5034 /* If an interrupt on the adapter did not occur, ignore it.
5035 * Or in the case of SIS 64, check for a stage change interrupt.
5036 */
5037 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
5038 if (ioa_cfg->sis64) {
5039 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5040 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5041 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5042
5043 /* clear stage change */
5044 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5045 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5046 list_del(&ioa_cfg->reset_cmd->queue);
5047 del_timer(&ioa_cfg->reset_cmd->timer);
5048 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5049 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5050 return IRQ_HANDLED;
5051 }
5052 }
5053
5054 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5055 return IRQ_NONE;
5056 }
5057
5058 while (1) {
5059 ipr_cmd = NULL;
5060
5061 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5062 ioa_cfg->toggle_bit) {
5063
5064 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
5065 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5066
5067 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
5068 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
5069 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5070 return IRQ_HANDLED;
5071 }
5072
5073 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5074
5075 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5076
5077 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5078
5079 list_del(&ipr_cmd->queue);
5080 del_timer(&ipr_cmd->timer);
5081 ipr_cmd->done(ipr_cmd);
5082
5083 rc = IRQ_HANDLED;
5084
5085 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
5086 ioa_cfg->hrrq_curr++;
5087 } else {
5088 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5089 ioa_cfg->toggle_bit ^= 1u;
5090 }
5091 }
5092
5093 if (ipr_cmd != NULL) {
5094 /* Clear the PCI interrupt */
5095 do {
5096 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5097 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
5098 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5099 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5100
5101 if (int_reg & IPR_PCII_HRRQ_UPDATED) {
5102 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
5103 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5104 return IRQ_HANDLED;
5105 }
5106
5107 } else
5108 break;
5109 }
5110
5111 if (unlikely(rc == IRQ_NONE))
5112 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5113
5114 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5115 return rc;
5116 }
5117
5118 /**
5119 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5120 * @ioa_cfg: ioa config struct
5121 * @ipr_cmd: ipr command struct
5122 *
5123 * Return value:
5124 * 0 on success / -1 on failure
5125 **/
5126 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5127 struct ipr_cmnd *ipr_cmd)
5128 {
5129 int i, nseg;
5130 struct scatterlist *sg;
5131 u32 length;
5132 u32 ioadl_flags = 0;
5133 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5134 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5135 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5136
5137 length = scsi_bufflen(scsi_cmd);
5138 if (!length)
5139 return 0;
5140
5141 nseg = scsi_dma_map(scsi_cmd);
5142 if (nseg < 0) {
5143 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5144 return -1;
5145 }
5146
5147 ipr_cmd->dma_use_sg = nseg;
5148
5149 ioarcb->data_transfer_length = cpu_to_be32(length);
5150 ioarcb->ioadl_len =
5151 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5152
5153 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5154 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5155 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5156 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5157 ioadl_flags = IPR_IOADL_FLAGS_READ;
5158
5159 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5160 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5161 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5162 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5163 }
5164
5165 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5166 return 0;
5167 }
5168
5169 /**
5170 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5171 * @ioa_cfg: ioa config struct
5172 * @ipr_cmd: ipr command struct
5173 *
5174 * Return value:
5175 * 0 on success / -1 on failure
5176 **/
5177 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5178 struct ipr_cmnd *ipr_cmd)
5179 {
5180 int i, nseg;
5181 struct scatterlist *sg;
5182 u32 length;
5183 u32 ioadl_flags = 0;
5184 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5185 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5186 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5187
5188 length = scsi_bufflen(scsi_cmd);
5189 if (!length)
5190 return 0;
5191
5192 nseg = scsi_dma_map(scsi_cmd);
5193 if (nseg < 0) {
5194 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5195 return -1;
5196 }
5197
5198 ipr_cmd->dma_use_sg = nseg;
5199
5200 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5201 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5202 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5203 ioarcb->data_transfer_length = cpu_to_be32(length);
5204 ioarcb->ioadl_len =
5205 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5206 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5207 ioadl_flags = IPR_IOADL_FLAGS_READ;
5208 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5209 ioarcb->read_ioadl_len =
5210 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5211 }
5212
5213 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5214 ioadl = ioarcb->u.add_data.u.ioadl;
5215 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5216 offsetof(struct ipr_ioarcb, u.add_data));
5217 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5218 }
5219
5220 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5221 ioadl[i].flags_and_data_len =
5222 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5223 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5224 }
5225
5226 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5227 return 0;
5228 }
5229
5230 /**
5231 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5232 * @scsi_cmd: scsi command struct
5233 *
5234 * Return value:
5235 * task attributes
5236 **/
5237 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5238 {
5239 u8 tag[2];
5240 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5241
5242 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5243 switch (tag[0]) {
5244 case MSG_SIMPLE_TAG:
5245 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5246 break;
5247 case MSG_HEAD_TAG:
5248 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5249 break;
5250 case MSG_ORDERED_TAG:
5251 rc = IPR_FLAGS_LO_ORDERED_TASK;
5252 break;
5253 };
5254 }
5255
5256 return rc;
5257 }
5258
5259 /**
5260 * ipr_erp_done - Process completion of ERP for a device
5261 * @ipr_cmd: ipr command struct
5262 *
5263 * This function copies the sense buffer into the scsi_cmd
5264 * struct and pushes the scsi_done function.
5265 *
5266 * Return value:
5267 * nothing
5268 **/
5269 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5270 {
5271 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5272 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5273 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5274 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5275
5276 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5277 scsi_cmd->result |= (DID_ERROR << 16);
5278 scmd_printk(KERN_ERR, scsi_cmd,
5279 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5280 } else {
5281 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5282 SCSI_SENSE_BUFFERSIZE);
5283 }
5284
5285 if (res) {
5286 if (!ipr_is_naca_model(res))
5287 res->needs_sync_complete = 1;
5288 res->in_erp = 0;
5289 }
5290 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5291 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5292 scsi_cmd->scsi_done(scsi_cmd);
5293 }
5294
5295 /**
5296 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5297 * @ipr_cmd: ipr command struct
5298 *
5299 * Return value:
5300 * none
5301 **/
5302 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5303 {
5304 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5305 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5306 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5307
5308 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5309 ioarcb->data_transfer_length = 0;
5310 ioarcb->read_data_transfer_length = 0;
5311 ioarcb->ioadl_len = 0;
5312 ioarcb->read_ioadl_len = 0;
5313 ioasa->hdr.ioasc = 0;
5314 ioasa->hdr.residual_data_len = 0;
5315
5316 if (ipr_cmd->ioa_cfg->sis64)
5317 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5318 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5319 else {
5320 ioarcb->write_ioadl_addr =
5321 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5322 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5323 }
5324 }
5325
5326 /**
5327 * ipr_erp_request_sense - Send request sense to a device
5328 * @ipr_cmd: ipr command struct
5329 *
5330 * This function sends a request sense to a device as a result
5331 * of a check condition.
5332 *
5333 * Return value:
5334 * nothing
5335 **/
5336 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5337 {
5338 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5339 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5340
5341 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5342 ipr_erp_done(ipr_cmd);
5343 return;
5344 }
5345
5346 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5347
5348 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5349 cmd_pkt->cdb[0] = REQUEST_SENSE;
5350 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5351 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5352 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5353 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5354
5355 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5356 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5357
5358 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5359 IPR_REQUEST_SENSE_TIMEOUT * 2);
5360 }
5361
5362 /**
5363 * ipr_erp_cancel_all - Send cancel all to a device
5364 * @ipr_cmd: ipr command struct
5365 *
5366 * This function sends a cancel all to a device to clear the
5367 * queue. If we are running TCQ on the device, QERR is set to 1,
5368 * which means all outstanding ops have been dropped on the floor.
5369 * Cancel all will return them to us.
5370 *
5371 * Return value:
5372 * nothing
5373 **/
5374 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5375 {
5376 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5377 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5378 struct ipr_cmd_pkt *cmd_pkt;
5379
5380 res->in_erp = 1;
5381
5382 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5383
5384 if (!scsi_get_tag_type(scsi_cmd->device)) {
5385 ipr_erp_request_sense(ipr_cmd);
5386 return;
5387 }
5388
5389 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5390 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5391 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5392
5393 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5394 IPR_CANCEL_ALL_TIMEOUT);
5395 }
5396
5397 /**
5398 * ipr_dump_ioasa - Dump contents of IOASA
5399 * @ioa_cfg: ioa config struct
5400 * @ipr_cmd: ipr command struct
5401 * @res: resource entry struct
5402 *
5403 * This function is invoked by the interrupt handler when ops
5404 * fail. It will log the IOASA if appropriate. Only called
5405 * for GPDD ops.
5406 *
5407 * Return value:
5408 * none
5409 **/
5410 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5411 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5412 {
5413 int i;
5414 u16 data_len;
5415 u32 ioasc, fd_ioasc;
5416 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5417 __be32 *ioasa_data = (__be32 *)ioasa;
5418 int error_index;
5419
5420 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5421 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5422
5423 if (0 == ioasc)
5424 return;
5425
5426 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5427 return;
5428
5429 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5430 error_index = ipr_get_error(fd_ioasc);
5431 else
5432 error_index = ipr_get_error(ioasc);
5433
5434 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5435 /* Don't log an error if the IOA already logged one */
5436 if (ioasa->hdr.ilid != 0)
5437 return;
5438
5439 if (!ipr_is_gscsi(res))
5440 return;
5441
5442 if (ipr_error_table[error_index].log_ioasa == 0)
5443 return;
5444 }
5445
5446 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
5447
5448 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5449 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5450 data_len = sizeof(struct ipr_ioasa64);
5451 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
5452 data_len = sizeof(struct ipr_ioasa);
5453
5454 ipr_err("IOASA Dump:\n");
5455
5456 for (i = 0; i < data_len / 4; i += 4) {
5457 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5458 be32_to_cpu(ioasa_data[i]),
5459 be32_to_cpu(ioasa_data[i+1]),
5460 be32_to_cpu(ioasa_data[i+2]),
5461 be32_to_cpu(ioasa_data[i+3]));
5462 }
5463 }
5464
5465 /**
5466 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5467 * @ioasa: IOASA
5468 * @sense_buf: sense data buffer
5469 *
5470 * Return value:
5471 * none
5472 **/
5473 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5474 {
5475 u32 failing_lba;
5476 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5477 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
5478 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5479 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
5480
5481 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5482
5483 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5484 return;
5485
5486 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5487
5488 if (ipr_is_vset_device(res) &&
5489 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5490 ioasa->u.vset.failing_lba_hi != 0) {
5491 sense_buf[0] = 0x72;
5492 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5493 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5494 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5495
5496 sense_buf[7] = 12;
5497 sense_buf[8] = 0;
5498 sense_buf[9] = 0x0A;
5499 sense_buf[10] = 0x80;
5500
5501 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5502
5503 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5504 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5505 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5506 sense_buf[15] = failing_lba & 0x000000ff;
5507
5508 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5509
5510 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5511 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5512 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5513 sense_buf[19] = failing_lba & 0x000000ff;
5514 } else {
5515 sense_buf[0] = 0x70;
5516 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5517 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5518 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5519
5520 /* Illegal request */
5521 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
5522 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
5523 sense_buf[7] = 10; /* additional length */
5524
5525 /* IOARCB was in error */
5526 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5527 sense_buf[15] = 0xC0;
5528 else /* Parameter data was invalid */
5529 sense_buf[15] = 0x80;
5530
5531 sense_buf[16] =
5532 ((IPR_FIELD_POINTER_MASK &
5533 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
5534 sense_buf[17] =
5535 (IPR_FIELD_POINTER_MASK &
5536 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
5537 } else {
5538 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5539 if (ipr_is_vset_device(res))
5540 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5541 else
5542 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5543
5544 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5545 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5546 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5547 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5548 sense_buf[6] = failing_lba & 0x000000ff;
5549 }
5550
5551 sense_buf[7] = 6; /* additional length */
5552 }
5553 }
5554 }
5555
5556 /**
5557 * ipr_get_autosense - Copy autosense data to sense buffer
5558 * @ipr_cmd: ipr command struct
5559 *
5560 * This function copies the autosense buffer to the buffer
5561 * in the scsi_cmd, if there is autosense available.
5562 *
5563 * Return value:
5564 * 1 if autosense was available / 0 if not
5565 **/
5566 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
5567 {
5568 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5569 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
5570
5571 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
5572 return 0;
5573
5574 if (ipr_cmd->ioa_cfg->sis64)
5575 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
5576 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
5577 SCSI_SENSE_BUFFERSIZE));
5578 else
5579 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
5580 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
5581 SCSI_SENSE_BUFFERSIZE));
5582 return 1;
5583 }
5584
5585 /**
5586 * ipr_erp_start - Process an error response for a SCSI op
5587 * @ioa_cfg: ioa config struct
5588 * @ipr_cmd: ipr command struct
5589 *
5590 * This function determines whether or not to initiate ERP
5591 * on the affected device.
5592 *
5593 * Return value:
5594 * nothing
5595 **/
5596 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
5597 struct ipr_cmnd *ipr_cmd)
5598 {
5599 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5600 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5601 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5602 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
5603
5604 if (!res) {
5605 ipr_scsi_eh_done(ipr_cmd);
5606 return;
5607 }
5608
5609 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
5610 ipr_gen_sense(ipr_cmd);
5611
5612 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5613
5614 switch (masked_ioasc) {
5615 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
5616 if (ipr_is_naca_model(res))
5617 scsi_cmd->result |= (DID_ABORT << 16);
5618 else
5619 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5620 break;
5621 case IPR_IOASC_IR_RESOURCE_HANDLE:
5622 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
5623 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5624 break;
5625 case IPR_IOASC_HW_SEL_TIMEOUT:
5626 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5627 if (!ipr_is_naca_model(res))
5628 res->needs_sync_complete = 1;
5629 break;
5630 case IPR_IOASC_SYNC_REQUIRED:
5631 if (!res->in_erp)
5632 res->needs_sync_complete = 1;
5633 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5634 break;
5635 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
5636 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
5637 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
5638 break;
5639 case IPR_IOASC_BUS_WAS_RESET:
5640 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
5641 /*
5642 * Report the bus reset and ask for a retry. The device
5643 * will give CC/UA the next command.
5644 */
5645 if (!res->resetting_device)
5646 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
5647 scsi_cmd->result |= (DID_ERROR << 16);
5648 if (!ipr_is_naca_model(res))
5649 res->needs_sync_complete = 1;
5650 break;
5651 case IPR_IOASC_HW_DEV_BUS_STATUS:
5652 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
5653 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
5654 if (!ipr_get_autosense(ipr_cmd)) {
5655 if (!ipr_is_naca_model(res)) {
5656 ipr_erp_cancel_all(ipr_cmd);
5657 return;
5658 }
5659 }
5660 }
5661 if (!ipr_is_naca_model(res))
5662 res->needs_sync_complete = 1;
5663 break;
5664 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
5665 break;
5666 default:
5667 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5668 scsi_cmd->result |= (DID_ERROR << 16);
5669 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
5670 res->needs_sync_complete = 1;
5671 break;
5672 }
5673
5674 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5675 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5676 scsi_cmd->scsi_done(scsi_cmd);
5677 }
5678
5679 /**
5680 * ipr_scsi_done - mid-layer done function
5681 * @ipr_cmd: ipr command struct
5682 *
5683 * This function is invoked by the interrupt handler for
5684 * ops generated by the SCSI mid-layer
5685 *
5686 * Return value:
5687 * none
5688 **/
5689 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
5690 {
5691 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5692 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5693 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5694
5695 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
5696
5697 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
5698 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5699 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5700 scsi_cmd->scsi_done(scsi_cmd);
5701 } else
5702 ipr_erp_start(ioa_cfg, ipr_cmd);
5703 }
5704
5705 /**
5706 * ipr_queuecommand - Queue a mid-layer request
5707 * @scsi_cmd: scsi command struct
5708 * @done: done function
5709 *
5710 * This function queues a request generated by the mid-layer.
5711 *
5712 * Return value:
5713 * 0 on success
5714 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
5715 * SCSI_MLQUEUE_HOST_BUSY if host is busy
5716 **/
5717 static int ipr_queuecommand_lck(struct scsi_cmnd *scsi_cmd,
5718 void (*done) (struct scsi_cmnd *))
5719 {
5720 struct ipr_ioa_cfg *ioa_cfg;
5721 struct ipr_resource_entry *res;
5722 struct ipr_ioarcb *ioarcb;
5723 struct ipr_cmnd *ipr_cmd;
5724 int rc = 0;
5725
5726 scsi_cmd->scsi_done = done;
5727 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5728 res = scsi_cmd->device->hostdata;
5729 scsi_cmd->result = (DID_OK << 16);
5730
5731 /*
5732 * We are currently blocking all devices due to a host reset
5733 * We have told the host to stop giving us new requests, but
5734 * ERP ops don't count. FIXME
5735 */
5736 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
5737 return SCSI_MLQUEUE_HOST_BUSY;
5738
5739 /*
5740 * FIXME - Create scsi_set_host_offline interface
5741 * and the ioa_is_dead check can be removed
5742 */
5743 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
5744 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
5745 scsi_cmd->result = (DID_NO_CONNECT << 16);
5746 scsi_cmd->scsi_done(scsi_cmd);
5747 return 0;
5748 }
5749
5750 if (ipr_is_gata(res) && res->sata_port)
5751 return ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
5752
5753 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5754 ioarcb = &ipr_cmd->ioarcb;
5755 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5756
5757 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
5758 ipr_cmd->scsi_cmd = scsi_cmd;
5759 ioarcb->res_handle = res->res_handle;
5760 ipr_cmd->done = ipr_scsi_done;
5761 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
5762
5763 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
5764 if (scsi_cmd->underflow == 0)
5765 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5766
5767 if (res->needs_sync_complete) {
5768 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
5769 res->needs_sync_complete = 0;
5770 }
5771
5772 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5773 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
5774 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
5775 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
5776 }
5777
5778 if (scsi_cmd->cmnd[0] >= 0xC0 &&
5779 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
5780 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5781
5782 if (likely(rc == 0)) {
5783 if (ioa_cfg->sis64)
5784 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
5785 else
5786 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
5787 }
5788
5789 if (likely(rc == 0)) {
5790 mb();
5791 ipr_send_command(ipr_cmd);
5792 } else {
5793 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5794 return SCSI_MLQUEUE_HOST_BUSY;
5795 }
5796
5797 return 0;
5798 }
5799
5800 static DEF_SCSI_QCMD(ipr_queuecommand)
5801
5802 /**
5803 * ipr_ioctl - IOCTL handler
5804 * @sdev: scsi device struct
5805 * @cmd: IOCTL cmd
5806 * @arg: IOCTL arg
5807 *
5808 * Return value:
5809 * 0 on success / other on failure
5810 **/
5811 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5812 {
5813 struct ipr_resource_entry *res;
5814
5815 res = (struct ipr_resource_entry *)sdev->hostdata;
5816 if (res && ipr_is_gata(res)) {
5817 if (cmd == HDIO_GET_IDENTITY)
5818 return -ENOTTY;
5819 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
5820 }
5821
5822 return -EINVAL;
5823 }
5824
5825 /**
5826 * ipr_info - Get information about the card/driver
5827 * @scsi_host: scsi host struct
5828 *
5829 * Return value:
5830 * pointer to buffer with description string
5831 **/
5832 static const char * ipr_ioa_info(struct Scsi_Host *host)
5833 {
5834 static char buffer[512];
5835 struct ipr_ioa_cfg *ioa_cfg;
5836 unsigned long lock_flags = 0;
5837
5838 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
5839
5840 spin_lock_irqsave(host->host_lock, lock_flags);
5841 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
5842 spin_unlock_irqrestore(host->host_lock, lock_flags);
5843
5844 return buffer;
5845 }
5846
5847 static struct scsi_host_template driver_template = {
5848 .module = THIS_MODULE,
5849 .name = "IPR",
5850 .info = ipr_ioa_info,
5851 .ioctl = ipr_ioctl,
5852 .queuecommand = ipr_queuecommand,
5853 .eh_abort_handler = ipr_eh_abort,
5854 .eh_device_reset_handler = ipr_eh_dev_reset,
5855 .eh_host_reset_handler = ipr_eh_host_reset,
5856 .slave_alloc = ipr_slave_alloc,
5857 .slave_configure = ipr_slave_configure,
5858 .slave_destroy = ipr_slave_destroy,
5859 .target_alloc = ipr_target_alloc,
5860 .target_destroy = ipr_target_destroy,
5861 .change_queue_depth = ipr_change_queue_depth,
5862 .change_queue_type = ipr_change_queue_type,
5863 .bios_param = ipr_biosparam,
5864 .can_queue = IPR_MAX_COMMANDS,
5865 .this_id = -1,
5866 .sg_tablesize = IPR_MAX_SGLIST,
5867 .max_sectors = IPR_IOA_MAX_SECTORS,
5868 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5869 .use_clustering = ENABLE_CLUSTERING,
5870 .shost_attrs = ipr_ioa_attrs,
5871 .sdev_attrs = ipr_dev_attrs,
5872 .proc_name = IPR_NAME
5873 };
5874
5875 /**
5876 * ipr_ata_phy_reset - libata phy_reset handler
5877 * @ap: ata port to reset
5878 *
5879 **/
5880 static void ipr_ata_phy_reset(struct ata_port *ap)
5881 {
5882 unsigned long flags;
5883 struct ipr_sata_port *sata_port = ap->private_data;
5884 struct ipr_resource_entry *res = sata_port->res;
5885 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5886 int rc;
5887
5888 ENTER;
5889 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5890 while(ioa_cfg->in_reset_reload) {
5891 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5892 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5893 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5894 }
5895
5896 if (!ioa_cfg->allow_cmds)
5897 goto out_unlock;
5898
5899 rc = ipr_device_reset(ioa_cfg, res);
5900
5901 if (rc) {
5902 ap->link.device[0].class = ATA_DEV_NONE;
5903 goto out_unlock;
5904 }
5905
5906 ap->link.device[0].class = res->ata_class;
5907 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
5908 ap->link.device[0].class = ATA_DEV_NONE;
5909
5910 out_unlock:
5911 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5912 LEAVE;
5913 }
5914
5915 /**
5916 * ipr_ata_post_internal - Cleanup after an internal command
5917 * @qc: ATA queued command
5918 *
5919 * Return value:
5920 * none
5921 **/
5922 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5923 {
5924 struct ipr_sata_port *sata_port = qc->ap->private_data;
5925 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5926 struct ipr_cmnd *ipr_cmd;
5927 unsigned long flags;
5928
5929 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5930 while(ioa_cfg->in_reset_reload) {
5931 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5932 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5933 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5934 }
5935
5936 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5937 if (ipr_cmd->qc == qc) {
5938 ipr_device_reset(ioa_cfg, sata_port->res);
5939 break;
5940 }
5941 }
5942 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5943 }
5944
5945 /**
5946 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5947 * @regs: destination
5948 * @tf: source ATA taskfile
5949 *
5950 * Return value:
5951 * none
5952 **/
5953 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5954 struct ata_taskfile *tf)
5955 {
5956 regs->feature = tf->feature;
5957 regs->nsect = tf->nsect;
5958 regs->lbal = tf->lbal;
5959 regs->lbam = tf->lbam;
5960 regs->lbah = tf->lbah;
5961 regs->device = tf->device;
5962 regs->command = tf->command;
5963 regs->hob_feature = tf->hob_feature;
5964 regs->hob_nsect = tf->hob_nsect;
5965 regs->hob_lbal = tf->hob_lbal;
5966 regs->hob_lbam = tf->hob_lbam;
5967 regs->hob_lbah = tf->hob_lbah;
5968 regs->ctl = tf->ctl;
5969 }
5970
5971 /**
5972 * ipr_sata_done - done function for SATA commands
5973 * @ipr_cmd: ipr command struct
5974 *
5975 * This function is invoked by the interrupt handler for
5976 * ops generated by the SCSI mid-layer to SATA devices
5977 *
5978 * Return value:
5979 * none
5980 **/
5981 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5982 {
5983 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5984 struct ata_queued_cmd *qc = ipr_cmd->qc;
5985 struct ipr_sata_port *sata_port = qc->ap->private_data;
5986 struct ipr_resource_entry *res = sata_port->res;
5987 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5988
5989 if (ipr_cmd->ioa_cfg->sis64)
5990 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5991 sizeof(struct ipr_ioasa_gata));
5992 else
5993 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5994 sizeof(struct ipr_ioasa_gata));
5995 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5996
5997 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5998 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
5999
6000 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6001 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6002 else
6003 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6004 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6005 ata_qc_complete(qc);
6006 }
6007
6008 /**
6009 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6010 * @ipr_cmd: ipr command struct
6011 * @qc: ATA queued command
6012 *
6013 **/
6014 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6015 struct ata_queued_cmd *qc)
6016 {
6017 u32 ioadl_flags = 0;
6018 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6019 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
6020 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6021 int len = qc->nbytes;
6022 struct scatterlist *sg;
6023 unsigned int si;
6024 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6025
6026 if (len == 0)
6027 return;
6028
6029 if (qc->dma_dir == DMA_TO_DEVICE) {
6030 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6031 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6032 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6033 ioadl_flags = IPR_IOADL_FLAGS_READ;
6034
6035 ioarcb->data_transfer_length = cpu_to_be32(len);
6036 ioarcb->ioadl_len =
6037 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6038 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6039 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
6040
6041 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6042 ioadl64->flags = cpu_to_be32(ioadl_flags);
6043 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6044 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6045
6046 last_ioadl64 = ioadl64;
6047 ioadl64++;
6048 }
6049
6050 if (likely(last_ioadl64))
6051 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6052 }
6053
6054 /**
6055 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6056 * @ipr_cmd: ipr command struct
6057 * @qc: ATA queued command
6058 *
6059 **/
6060 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6061 struct ata_queued_cmd *qc)
6062 {
6063 u32 ioadl_flags = 0;
6064 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6065 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6066 struct ipr_ioadl_desc *last_ioadl = NULL;
6067 int len = qc->nbytes;
6068 struct scatterlist *sg;
6069 unsigned int si;
6070
6071 if (len == 0)
6072 return;
6073
6074 if (qc->dma_dir == DMA_TO_DEVICE) {
6075 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6076 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6077 ioarcb->data_transfer_length = cpu_to_be32(len);
6078 ioarcb->ioadl_len =
6079 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6080 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6081 ioadl_flags = IPR_IOADL_FLAGS_READ;
6082 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6083 ioarcb->read_ioadl_len =
6084 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6085 }
6086
6087 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6088 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6089 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6090
6091 last_ioadl = ioadl;
6092 ioadl++;
6093 }
6094
6095 if (likely(last_ioadl))
6096 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6097 }
6098
6099 /**
6100 * ipr_qc_issue - Issue a SATA qc to a device
6101 * @qc: queued command
6102 *
6103 * Return value:
6104 * 0 if success
6105 **/
6106 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6107 {
6108 struct ata_port *ap = qc->ap;
6109 struct ipr_sata_port *sata_port = ap->private_data;
6110 struct ipr_resource_entry *res = sata_port->res;
6111 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6112 struct ipr_cmnd *ipr_cmd;
6113 struct ipr_ioarcb *ioarcb;
6114 struct ipr_ioarcb_ata_regs *regs;
6115
6116 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
6117 return AC_ERR_SYSTEM;
6118
6119 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6120 ioarcb = &ipr_cmd->ioarcb;
6121
6122 if (ioa_cfg->sis64) {
6123 regs = &ipr_cmd->i.ata_ioadl.regs;
6124 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6125 } else
6126 regs = &ioarcb->u.add_data.u.regs;
6127
6128 memset(regs, 0, sizeof(*regs));
6129 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6130
6131 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6132 ipr_cmd->qc = qc;
6133 ipr_cmd->done = ipr_sata_done;
6134 ipr_cmd->ioarcb.res_handle = res->res_handle;
6135 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6136 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6137 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6138 ipr_cmd->dma_use_sg = qc->n_elem;
6139
6140 if (ioa_cfg->sis64)
6141 ipr_build_ata_ioadl64(ipr_cmd, qc);
6142 else
6143 ipr_build_ata_ioadl(ipr_cmd, qc);
6144
6145 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6146 ipr_copy_sata_tf(regs, &qc->tf);
6147 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6148 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6149
6150 switch (qc->tf.protocol) {
6151 case ATA_PROT_NODATA:
6152 case ATA_PROT_PIO:
6153 break;
6154
6155 case ATA_PROT_DMA:
6156 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6157 break;
6158
6159 case ATAPI_PROT_PIO:
6160 case ATAPI_PROT_NODATA:
6161 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6162 break;
6163
6164 case ATAPI_PROT_DMA:
6165 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6166 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6167 break;
6168
6169 default:
6170 WARN_ON(1);
6171 return AC_ERR_INVALID;
6172 }
6173
6174 mb();
6175
6176 ipr_send_command(ipr_cmd);
6177
6178 return 0;
6179 }
6180
6181 /**
6182 * ipr_qc_fill_rtf - Read result TF
6183 * @qc: ATA queued command
6184 *
6185 * Return value:
6186 * true
6187 **/
6188 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6189 {
6190 struct ipr_sata_port *sata_port = qc->ap->private_data;
6191 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6192 struct ata_taskfile *tf = &qc->result_tf;
6193
6194 tf->feature = g->error;
6195 tf->nsect = g->nsect;
6196 tf->lbal = g->lbal;
6197 tf->lbam = g->lbam;
6198 tf->lbah = g->lbah;
6199 tf->device = g->device;
6200 tf->command = g->status;
6201 tf->hob_nsect = g->hob_nsect;
6202 tf->hob_lbal = g->hob_lbal;
6203 tf->hob_lbam = g->hob_lbam;
6204 tf->hob_lbah = g->hob_lbah;
6205 tf->ctl = g->alt_status;
6206
6207 return true;
6208 }
6209
6210 static struct ata_port_operations ipr_sata_ops = {
6211 .phy_reset = ipr_ata_phy_reset,
6212 .hardreset = ipr_sata_reset,
6213 .post_internal_cmd = ipr_ata_post_internal,
6214 .qc_prep = ata_noop_qc_prep,
6215 .qc_issue = ipr_qc_issue,
6216 .qc_fill_rtf = ipr_qc_fill_rtf,
6217 .port_start = ata_sas_port_start,
6218 .port_stop = ata_sas_port_stop
6219 };
6220
6221 static struct ata_port_info sata_port_info = {
6222 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
6223 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
6224 .pio_mask = 0x10, /* pio4 */
6225 .mwdma_mask = 0x07,
6226 .udma_mask = 0x7f, /* udma0-6 */
6227 .port_ops = &ipr_sata_ops
6228 };
6229
6230 #ifdef CONFIG_PPC_PSERIES
6231 static const u16 ipr_blocked_processors[] = {
6232 PV_NORTHSTAR,
6233 PV_PULSAR,
6234 PV_POWER4,
6235 PV_ICESTAR,
6236 PV_SSTAR,
6237 PV_POWER4p,
6238 PV_630,
6239 PV_630p
6240 };
6241
6242 /**
6243 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6244 * @ioa_cfg: ioa cfg struct
6245 *
6246 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6247 * certain pSeries hardware. This function determines if the given
6248 * adapter is in one of these confgurations or not.
6249 *
6250 * Return value:
6251 * 1 if adapter is not supported / 0 if adapter is supported
6252 **/
6253 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6254 {
6255 int i;
6256
6257 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6258 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
6259 if (__is_processor(ipr_blocked_processors[i]))
6260 return 1;
6261 }
6262 }
6263 return 0;
6264 }
6265 #else
6266 #define ipr_invalid_adapter(ioa_cfg) 0
6267 #endif
6268
6269 /**
6270 * ipr_ioa_bringdown_done - IOA bring down completion.
6271 * @ipr_cmd: ipr command struct
6272 *
6273 * This function processes the completion of an adapter bring down.
6274 * It wakes any reset sleepers.
6275 *
6276 * Return value:
6277 * IPR_RC_JOB_RETURN
6278 **/
6279 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6280 {
6281 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6282
6283 ENTER;
6284 ioa_cfg->in_reset_reload = 0;
6285 ioa_cfg->reset_retries = 0;
6286 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6287 wake_up_all(&ioa_cfg->reset_wait_q);
6288
6289 spin_unlock_irq(ioa_cfg->host->host_lock);
6290 scsi_unblock_requests(ioa_cfg->host);
6291 spin_lock_irq(ioa_cfg->host->host_lock);
6292 LEAVE;
6293
6294 return IPR_RC_JOB_RETURN;
6295 }
6296
6297 /**
6298 * ipr_ioa_reset_done - IOA reset completion.
6299 * @ipr_cmd: ipr command struct
6300 *
6301 * This function processes the completion of an adapter reset.
6302 * It schedules any necessary mid-layer add/removes and
6303 * wakes any reset sleepers.
6304 *
6305 * Return value:
6306 * IPR_RC_JOB_RETURN
6307 **/
6308 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6309 {
6310 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6311 struct ipr_resource_entry *res;
6312 struct ipr_hostrcb *hostrcb, *temp;
6313 int i = 0;
6314
6315 ENTER;
6316 ioa_cfg->in_reset_reload = 0;
6317 ioa_cfg->allow_cmds = 1;
6318 ioa_cfg->reset_cmd = NULL;
6319 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6320
6321 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6322 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6323 ipr_trace;
6324 break;
6325 }
6326 }
6327 schedule_work(&ioa_cfg->work_q);
6328
6329 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6330 list_del(&hostrcb->queue);
6331 if (i++ < IPR_NUM_LOG_HCAMS)
6332 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6333 else
6334 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6335 }
6336
6337 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
6338 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6339
6340 ioa_cfg->reset_retries = 0;
6341 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6342 wake_up_all(&ioa_cfg->reset_wait_q);
6343
6344 spin_unlock(ioa_cfg->host->host_lock);
6345 scsi_unblock_requests(ioa_cfg->host);
6346 spin_lock(ioa_cfg->host->host_lock);
6347
6348 if (!ioa_cfg->allow_cmds)
6349 scsi_block_requests(ioa_cfg->host);
6350
6351 LEAVE;
6352 return IPR_RC_JOB_RETURN;
6353 }
6354
6355 /**
6356 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6357 * @supported_dev: supported device struct
6358 * @vpids: vendor product id struct
6359 *
6360 * Return value:
6361 * none
6362 **/
6363 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6364 struct ipr_std_inq_vpids *vpids)
6365 {
6366 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6367 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6368 supported_dev->num_records = 1;
6369 supported_dev->data_length =
6370 cpu_to_be16(sizeof(struct ipr_supported_device));
6371 supported_dev->reserved = 0;
6372 }
6373
6374 /**
6375 * ipr_set_supported_devs - Send Set Supported Devices for a device
6376 * @ipr_cmd: ipr command struct
6377 *
6378 * This function sends a Set Supported Devices to the adapter
6379 *
6380 * Return value:
6381 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6382 **/
6383 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6384 {
6385 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6386 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
6387 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6388 struct ipr_resource_entry *res = ipr_cmd->u.res;
6389
6390 ipr_cmd->job_step = ipr_ioa_reset_done;
6391
6392 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
6393 if (!ipr_is_scsi_disk(res))
6394 continue;
6395
6396 ipr_cmd->u.res = res;
6397 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
6398
6399 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6400 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6401 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6402
6403 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
6404 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
6405 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6406 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6407
6408 ipr_init_ioadl(ipr_cmd,
6409 ioa_cfg->vpd_cbs_dma +
6410 offsetof(struct ipr_misc_cbs, supp_dev),
6411 sizeof(struct ipr_supported_device),
6412 IPR_IOADL_FLAGS_WRITE_LAST);
6413
6414 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6415 IPR_SET_SUP_DEVICE_TIMEOUT);
6416
6417 if (!ioa_cfg->sis64)
6418 ipr_cmd->job_step = ipr_set_supported_devs;
6419 return IPR_RC_JOB_RETURN;
6420 }
6421
6422 return IPR_RC_JOB_CONTINUE;
6423 }
6424
6425 /**
6426 * ipr_get_mode_page - Locate specified mode page
6427 * @mode_pages: mode page buffer
6428 * @page_code: page code to find
6429 * @len: minimum required length for mode page
6430 *
6431 * Return value:
6432 * pointer to mode page / NULL on failure
6433 **/
6434 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6435 u32 page_code, u32 len)
6436 {
6437 struct ipr_mode_page_hdr *mode_hdr;
6438 u32 page_length;
6439 u32 length;
6440
6441 if (!mode_pages || (mode_pages->hdr.length == 0))
6442 return NULL;
6443
6444 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6445 mode_hdr = (struct ipr_mode_page_hdr *)
6446 (mode_pages->data + mode_pages->hdr.block_desc_len);
6447
6448 while (length) {
6449 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6450 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6451 return mode_hdr;
6452 break;
6453 } else {
6454 page_length = (sizeof(struct ipr_mode_page_hdr) +
6455 mode_hdr->page_length);
6456 length -= page_length;
6457 mode_hdr = (struct ipr_mode_page_hdr *)
6458 ((unsigned long)mode_hdr + page_length);
6459 }
6460 }
6461 return NULL;
6462 }
6463
6464 /**
6465 * ipr_check_term_power - Check for term power errors
6466 * @ioa_cfg: ioa config struct
6467 * @mode_pages: IOAFP mode pages buffer
6468 *
6469 * Check the IOAFP's mode page 28 for term power errors
6470 *
6471 * Return value:
6472 * nothing
6473 **/
6474 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6475 struct ipr_mode_pages *mode_pages)
6476 {
6477 int i;
6478 int entry_length;
6479 struct ipr_dev_bus_entry *bus;
6480 struct ipr_mode_page28 *mode_page;
6481
6482 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6483 sizeof(struct ipr_mode_page28));
6484
6485 entry_length = mode_page->entry_length;
6486
6487 bus = mode_page->bus;
6488
6489 for (i = 0; i < mode_page->num_entries; i++) {
6490 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6491 dev_err(&ioa_cfg->pdev->dev,
6492 "Term power is absent on scsi bus %d\n",
6493 bus->res_addr.bus);
6494 }
6495
6496 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6497 }
6498 }
6499
6500 /**
6501 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6502 * @ioa_cfg: ioa config struct
6503 *
6504 * Looks through the config table checking for SES devices. If
6505 * the SES device is in the SES table indicating a maximum SCSI
6506 * bus speed, the speed is limited for the bus.
6507 *
6508 * Return value:
6509 * none
6510 **/
6511 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6512 {
6513 u32 max_xfer_rate;
6514 int i;
6515
6516 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6517 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6518 ioa_cfg->bus_attr[i].bus_width);
6519
6520 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6521 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6522 }
6523 }
6524
6525 /**
6526 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6527 * @ioa_cfg: ioa config struct
6528 * @mode_pages: mode page 28 buffer
6529 *
6530 * Updates mode page 28 based on driver configuration
6531 *
6532 * Return value:
6533 * none
6534 **/
6535 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
6536 struct ipr_mode_pages *mode_pages)
6537 {
6538 int i, entry_length;
6539 struct ipr_dev_bus_entry *bus;
6540 struct ipr_bus_attributes *bus_attr;
6541 struct ipr_mode_page28 *mode_page;
6542
6543 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6544 sizeof(struct ipr_mode_page28));
6545
6546 entry_length = mode_page->entry_length;
6547
6548 /* Loop for each device bus entry */
6549 for (i = 0, bus = mode_page->bus;
6550 i < mode_page->num_entries;
6551 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
6552 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
6553 dev_err(&ioa_cfg->pdev->dev,
6554 "Invalid resource address reported: 0x%08X\n",
6555 IPR_GET_PHYS_LOC(bus->res_addr));
6556 continue;
6557 }
6558
6559 bus_attr = &ioa_cfg->bus_attr[i];
6560 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
6561 bus->bus_width = bus_attr->bus_width;
6562 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
6563 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
6564 if (bus_attr->qas_enabled)
6565 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
6566 else
6567 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
6568 }
6569 }
6570
6571 /**
6572 * ipr_build_mode_select - Build a mode select command
6573 * @ipr_cmd: ipr command struct
6574 * @res_handle: resource handle to send command to
6575 * @parm: Byte 2 of Mode Sense command
6576 * @dma_addr: DMA buffer address
6577 * @xfer_len: data transfer length
6578 *
6579 * Return value:
6580 * none
6581 **/
6582 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
6583 __be32 res_handle, u8 parm,
6584 dma_addr_t dma_addr, u8 xfer_len)
6585 {
6586 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6587
6588 ioarcb->res_handle = res_handle;
6589 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6590 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6591 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
6592 ioarcb->cmd_pkt.cdb[1] = parm;
6593 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6594
6595 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
6596 }
6597
6598 /**
6599 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
6600 * @ipr_cmd: ipr command struct
6601 *
6602 * This function sets up the SCSI bus attributes and sends
6603 * a Mode Select for Page 28 to activate them.
6604 *
6605 * Return value:
6606 * IPR_RC_JOB_RETURN
6607 **/
6608 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
6609 {
6610 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6611 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6612 int length;
6613
6614 ENTER;
6615 ipr_scsi_bus_speed_limit(ioa_cfg);
6616 ipr_check_term_power(ioa_cfg, mode_pages);
6617 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
6618 length = mode_pages->hdr.length + 1;
6619 mode_pages->hdr.length = 0;
6620
6621 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6622 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6623 length);
6624
6625 ipr_cmd->job_step = ipr_set_supported_devs;
6626 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6627 struct ipr_resource_entry, queue);
6628 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6629
6630 LEAVE;
6631 return IPR_RC_JOB_RETURN;
6632 }
6633
6634 /**
6635 * ipr_build_mode_sense - Builds a mode sense command
6636 * @ipr_cmd: ipr command struct
6637 * @res: resource entry struct
6638 * @parm: Byte 2 of mode sense command
6639 * @dma_addr: DMA address of mode sense buffer
6640 * @xfer_len: Size of DMA buffer
6641 *
6642 * Return value:
6643 * none
6644 **/
6645 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
6646 __be32 res_handle,
6647 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
6648 {
6649 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6650
6651 ioarcb->res_handle = res_handle;
6652 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
6653 ioarcb->cmd_pkt.cdb[2] = parm;
6654 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6655 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6656
6657 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6658 }
6659
6660 /**
6661 * ipr_reset_cmd_failed - Handle failure of IOA reset command
6662 * @ipr_cmd: ipr command struct
6663 *
6664 * This function handles the failure of an IOA bringup command.
6665 *
6666 * Return value:
6667 * IPR_RC_JOB_RETURN
6668 **/
6669 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
6670 {
6671 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6672 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6673
6674 dev_err(&ioa_cfg->pdev->dev,
6675 "0x%02X failed with IOASC: 0x%08X\n",
6676 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
6677
6678 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6679 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6680 return IPR_RC_JOB_RETURN;
6681 }
6682
6683 /**
6684 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
6685 * @ipr_cmd: ipr command struct
6686 *
6687 * This function handles the failure of a Mode Sense to the IOAFP.
6688 * Some adapters do not handle all mode pages.
6689 *
6690 * Return value:
6691 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6692 **/
6693 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
6694 {
6695 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6696 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6697
6698 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6699 ipr_cmd->job_step = ipr_set_supported_devs;
6700 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6701 struct ipr_resource_entry, queue);
6702 return IPR_RC_JOB_CONTINUE;
6703 }
6704
6705 return ipr_reset_cmd_failed(ipr_cmd);
6706 }
6707
6708 /**
6709 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
6710 * @ipr_cmd: ipr command struct
6711 *
6712 * This function send a Page 28 mode sense to the IOA to
6713 * retrieve SCSI bus attributes.
6714 *
6715 * Return value:
6716 * IPR_RC_JOB_RETURN
6717 **/
6718 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
6719 {
6720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6721
6722 ENTER;
6723 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6724 0x28, ioa_cfg->vpd_cbs_dma +
6725 offsetof(struct ipr_misc_cbs, mode_pages),
6726 sizeof(struct ipr_mode_pages));
6727
6728 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
6729 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
6730
6731 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6732
6733 LEAVE;
6734 return IPR_RC_JOB_RETURN;
6735 }
6736
6737 /**
6738 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
6739 * @ipr_cmd: ipr command struct
6740 *
6741 * This function enables dual IOA RAID support if possible.
6742 *
6743 * Return value:
6744 * IPR_RC_JOB_RETURN
6745 **/
6746 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
6747 {
6748 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6749 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6750 struct ipr_mode_page24 *mode_page;
6751 int length;
6752
6753 ENTER;
6754 mode_page = ipr_get_mode_page(mode_pages, 0x24,
6755 sizeof(struct ipr_mode_page24));
6756
6757 if (mode_page)
6758 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
6759
6760 length = mode_pages->hdr.length + 1;
6761 mode_pages->hdr.length = 0;
6762
6763 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6764 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6765 length);
6766
6767 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6768 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6769
6770 LEAVE;
6771 return IPR_RC_JOB_RETURN;
6772 }
6773
6774 /**
6775 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
6776 * @ipr_cmd: ipr command struct
6777 *
6778 * This function handles the failure of a Mode Sense to the IOAFP.
6779 * Some adapters do not handle all mode pages.
6780 *
6781 * Return value:
6782 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6783 **/
6784 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
6785 {
6786 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6787
6788 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6789 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6790 return IPR_RC_JOB_CONTINUE;
6791 }
6792
6793 return ipr_reset_cmd_failed(ipr_cmd);
6794 }
6795
6796 /**
6797 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
6798 * @ipr_cmd: ipr command struct
6799 *
6800 * This function send a mode sense to the IOA to retrieve
6801 * the IOA Advanced Function Control mode page.
6802 *
6803 * Return value:
6804 * IPR_RC_JOB_RETURN
6805 **/
6806 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
6807 {
6808 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6809
6810 ENTER;
6811 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6812 0x24, ioa_cfg->vpd_cbs_dma +
6813 offsetof(struct ipr_misc_cbs, mode_pages),
6814 sizeof(struct ipr_mode_pages));
6815
6816 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
6817 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
6818
6819 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6820
6821 LEAVE;
6822 return IPR_RC_JOB_RETURN;
6823 }
6824
6825 /**
6826 * ipr_init_res_table - Initialize the resource table
6827 * @ipr_cmd: ipr command struct
6828 *
6829 * This function looks through the existing resource table, comparing
6830 * it with the config table. This function will take care of old/new
6831 * devices and schedule adding/removing them from the mid-layer
6832 * as appropriate.
6833 *
6834 * Return value:
6835 * IPR_RC_JOB_CONTINUE
6836 **/
6837 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
6838 {
6839 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6840 struct ipr_resource_entry *res, *temp;
6841 struct ipr_config_table_entry_wrapper cfgtew;
6842 int entries, found, flag, i;
6843 LIST_HEAD(old_res);
6844
6845 ENTER;
6846 if (ioa_cfg->sis64)
6847 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
6848 else
6849 flag = ioa_cfg->u.cfg_table->hdr.flags;
6850
6851 if (flag & IPR_UCODE_DOWNLOAD_REQ)
6852 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
6853
6854 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6855 list_move_tail(&res->queue, &old_res);
6856
6857 if (ioa_cfg->sis64)
6858 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
6859 else
6860 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
6861
6862 for (i = 0; i < entries; i++) {
6863 if (ioa_cfg->sis64)
6864 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
6865 else
6866 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
6867 found = 0;
6868
6869 list_for_each_entry_safe(res, temp, &old_res, queue) {
6870 if (ipr_is_same_device(res, &cfgtew)) {
6871 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6872 found = 1;
6873 break;
6874 }
6875 }
6876
6877 if (!found) {
6878 if (list_empty(&ioa_cfg->free_res_q)) {
6879 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6880 break;
6881 }
6882
6883 found = 1;
6884 res = list_entry(ioa_cfg->free_res_q.next,
6885 struct ipr_resource_entry, queue);
6886 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6887 ipr_init_res_entry(res, &cfgtew);
6888 res->add_to_ml = 1;
6889 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
6890 res->sdev->allow_restart = 1;
6891
6892 if (found)
6893 ipr_update_res_entry(res, &cfgtew);
6894 }
6895
6896 list_for_each_entry_safe(res, temp, &old_res, queue) {
6897 if (res->sdev) {
6898 res->del_from_ml = 1;
6899 res->res_handle = IPR_INVALID_RES_HANDLE;
6900 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6901 }
6902 }
6903
6904 list_for_each_entry_safe(res, temp, &old_res, queue) {
6905 ipr_clear_res_target(res);
6906 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6907 }
6908
6909 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6910 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6911 else
6912 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6913
6914 LEAVE;
6915 return IPR_RC_JOB_CONTINUE;
6916 }
6917
6918 /**
6919 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6920 * @ipr_cmd: ipr command struct
6921 *
6922 * This function sends a Query IOA Configuration command
6923 * to the adapter to retrieve the IOA configuration table.
6924 *
6925 * Return value:
6926 * IPR_RC_JOB_RETURN
6927 **/
6928 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6929 {
6930 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6931 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6932 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6933 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6934
6935 ENTER;
6936 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6937 ioa_cfg->dual_raid = 1;
6938 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6939 ucode_vpd->major_release, ucode_vpd->card_type,
6940 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6941 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6942 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6943
6944 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6945 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
6946 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
6947 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
6948
6949 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
6950 IPR_IOADL_FLAGS_READ_LAST);
6951
6952 ipr_cmd->job_step = ipr_init_res_table;
6953
6954 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6955
6956 LEAVE;
6957 return IPR_RC_JOB_RETURN;
6958 }
6959
6960 /**
6961 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6962 * @ipr_cmd: ipr command struct
6963 *
6964 * This utility function sends an inquiry to the adapter.
6965 *
6966 * Return value:
6967 * none
6968 **/
6969 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6970 dma_addr_t dma_addr, u8 xfer_len)
6971 {
6972 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6973
6974 ENTER;
6975 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6976 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6977
6978 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6979 ioarcb->cmd_pkt.cdb[1] = flags;
6980 ioarcb->cmd_pkt.cdb[2] = page;
6981 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6982
6983 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6984
6985 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6986 LEAVE;
6987 }
6988
6989 /**
6990 * ipr_inquiry_page_supported - Is the given inquiry page supported
6991 * @page0: inquiry page 0 buffer
6992 * @page: page code.
6993 *
6994 * This function determines if the specified inquiry page is supported.
6995 *
6996 * Return value:
6997 * 1 if page is supported / 0 if not
6998 **/
6999 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7000 {
7001 int i;
7002
7003 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7004 if (page0->page[i] == page)
7005 return 1;
7006
7007 return 0;
7008 }
7009
7010 /**
7011 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7012 * @ipr_cmd: ipr command struct
7013 *
7014 * This function sends a Page 0xD0 inquiry to the adapter
7015 * to retrieve adapter capabilities.
7016 *
7017 * Return value:
7018 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7019 **/
7020 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7021 {
7022 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7023 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7024 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7025
7026 ENTER;
7027 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7028 memset(cap, 0, sizeof(*cap));
7029
7030 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7031 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7032 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7033 sizeof(struct ipr_inquiry_cap));
7034 return IPR_RC_JOB_RETURN;
7035 }
7036
7037 LEAVE;
7038 return IPR_RC_JOB_CONTINUE;
7039 }
7040
7041 /**
7042 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7043 * @ipr_cmd: ipr command struct
7044 *
7045 * This function sends a Page 3 inquiry to the adapter
7046 * to retrieve software VPD information.
7047 *
7048 * Return value:
7049 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7050 **/
7051 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7052 {
7053 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7054
7055 ENTER;
7056
7057 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7058
7059 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7060 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7061 sizeof(struct ipr_inquiry_page3));
7062
7063 LEAVE;
7064 return IPR_RC_JOB_RETURN;
7065 }
7066
7067 /**
7068 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7069 * @ipr_cmd: ipr command struct
7070 *
7071 * This function sends a Page 0 inquiry to the adapter
7072 * to retrieve supported inquiry pages.
7073 *
7074 * Return value:
7075 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7076 **/
7077 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7078 {
7079 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7080 char type[5];
7081
7082 ENTER;
7083
7084 /* Grab the type out of the VPD and store it away */
7085 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7086 type[4] = '\0';
7087 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7088
7089 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7090
7091 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7092 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7093 sizeof(struct ipr_inquiry_page0));
7094
7095 LEAVE;
7096 return IPR_RC_JOB_RETURN;
7097 }
7098
7099 /**
7100 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7101 * @ipr_cmd: ipr command struct
7102 *
7103 * This function sends a standard inquiry to the adapter.
7104 *
7105 * Return value:
7106 * IPR_RC_JOB_RETURN
7107 **/
7108 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7109 {
7110 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7111
7112 ENTER;
7113 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7114
7115 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7116 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7117 sizeof(struct ipr_ioa_vpd));
7118
7119 LEAVE;
7120 return IPR_RC_JOB_RETURN;
7121 }
7122
7123 /**
7124 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7125 * @ipr_cmd: ipr command struct
7126 *
7127 * This function send an Identify Host Request Response Queue
7128 * command to establish the HRRQ with the adapter.
7129 *
7130 * Return value:
7131 * IPR_RC_JOB_RETURN
7132 **/
7133 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7134 {
7135 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7136 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7137
7138 ENTER;
7139 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7140
7141 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7142 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7143
7144 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7145 if (ioa_cfg->sis64)
7146 ioarcb->cmd_pkt.cdb[1] = 0x1;
7147 ioarcb->cmd_pkt.cdb[2] =
7148 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff;
7149 ioarcb->cmd_pkt.cdb[3] =
7150 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff;
7151 ioarcb->cmd_pkt.cdb[4] =
7152 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff;
7153 ioarcb->cmd_pkt.cdb[5] =
7154 ((u64) ioa_cfg->host_rrq_dma) & 0xff;
7155 ioarcb->cmd_pkt.cdb[7] =
7156 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
7157 ioarcb->cmd_pkt.cdb[8] =
7158 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
7159
7160 if (ioa_cfg->sis64) {
7161 ioarcb->cmd_pkt.cdb[10] =
7162 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff;
7163 ioarcb->cmd_pkt.cdb[11] =
7164 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff;
7165 ioarcb->cmd_pkt.cdb[12] =
7166 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff;
7167 ioarcb->cmd_pkt.cdb[13] =
7168 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff;
7169 }
7170
7171 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7172
7173 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7174
7175 LEAVE;
7176 return IPR_RC_JOB_RETURN;
7177 }
7178
7179 /**
7180 * ipr_reset_timer_done - Adapter reset timer function
7181 * @ipr_cmd: ipr command struct
7182 *
7183 * Description: This function is used in adapter reset processing
7184 * for timing events. If the reset_cmd pointer in the IOA
7185 * config struct is not this adapter's we are doing nested
7186 * resets and fail_all_ops will take care of freeing the
7187 * command block.
7188 *
7189 * Return value:
7190 * none
7191 **/
7192 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7193 {
7194 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7195 unsigned long lock_flags = 0;
7196
7197 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7198
7199 if (ioa_cfg->reset_cmd == ipr_cmd) {
7200 list_del(&ipr_cmd->queue);
7201 ipr_cmd->done(ipr_cmd);
7202 }
7203
7204 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7205 }
7206
7207 /**
7208 * ipr_reset_start_timer - Start a timer for adapter reset job
7209 * @ipr_cmd: ipr command struct
7210 * @timeout: timeout value
7211 *
7212 * Description: This function is used in adapter reset processing
7213 * for timing events. If the reset_cmd pointer in the IOA
7214 * config struct is not this adapter's we are doing nested
7215 * resets and fail_all_ops will take care of freeing the
7216 * command block.
7217 *
7218 * Return value:
7219 * none
7220 **/
7221 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7222 unsigned long timeout)
7223 {
7224 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7225 ipr_cmd->done = ipr_reset_ioa_job;
7226
7227 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7228 ipr_cmd->timer.expires = jiffies + timeout;
7229 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7230 add_timer(&ipr_cmd->timer);
7231 }
7232
7233 /**
7234 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7235 * @ioa_cfg: ioa cfg struct
7236 *
7237 * Return value:
7238 * nothing
7239 **/
7240 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7241 {
7242 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
7243
7244 /* Initialize Host RRQ pointers */
7245 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
7246 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
7247 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
7248 ioa_cfg->toggle_bit = 1;
7249
7250 /* Zero out config table */
7251 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
7252 }
7253
7254 /**
7255 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7256 * @ipr_cmd: ipr command struct
7257 *
7258 * Return value:
7259 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7260 **/
7261 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7262 {
7263 unsigned long stage, stage_time;
7264 u32 feedback;
7265 volatile u32 int_reg;
7266 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7267 u64 maskval = 0;
7268
7269 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7270 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7271 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7272
7273 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7274
7275 /* sanity check the stage_time value */
7276 if (stage_time == 0)
7277 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7278 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
7279 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7280 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7281 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7282
7283 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7284 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7285 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7286 stage_time = ioa_cfg->transop_timeout;
7287 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7288 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
7289 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7290 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7291 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7292 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7293 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7294 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7295 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7296 return IPR_RC_JOB_CONTINUE;
7297 }
7298 }
7299
7300 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7301 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7302 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7303 ipr_cmd->done = ipr_reset_ioa_job;
7304 add_timer(&ipr_cmd->timer);
7305 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7306
7307 return IPR_RC_JOB_RETURN;
7308 }
7309
7310 /**
7311 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7312 * @ipr_cmd: ipr command struct
7313 *
7314 * This function reinitializes some control blocks and
7315 * enables destructive diagnostics on the adapter.
7316 *
7317 * Return value:
7318 * IPR_RC_JOB_RETURN
7319 **/
7320 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7321 {
7322 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7323 volatile u32 int_reg;
7324 volatile u64 maskval;
7325
7326 ENTER;
7327 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7328 ipr_init_ioa_mem(ioa_cfg);
7329
7330 ioa_cfg->allow_interrupts = 1;
7331 if (ioa_cfg->sis64) {
7332 /* Set the adapter to the correct endian mode. */
7333 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7334 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7335 }
7336
7337 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7338
7339 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7340 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
7341 ioa_cfg->regs.clr_interrupt_mask_reg32);
7342 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7343 return IPR_RC_JOB_CONTINUE;
7344 }
7345
7346 /* Enable destructive diagnostics on IOA */
7347 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7348
7349 if (ioa_cfg->sis64) {
7350 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7351 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7352 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7353 } else
7354 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
7355
7356 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7357
7358 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7359
7360 if (ioa_cfg->sis64) {
7361 ipr_cmd->job_step = ipr_reset_next_stage;
7362 return IPR_RC_JOB_CONTINUE;
7363 }
7364
7365 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7366 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
7367 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7368 ipr_cmd->done = ipr_reset_ioa_job;
7369 add_timer(&ipr_cmd->timer);
7370 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7371
7372 LEAVE;
7373 return IPR_RC_JOB_RETURN;
7374 }
7375
7376 /**
7377 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7378 * @ipr_cmd: ipr command struct
7379 *
7380 * This function is invoked when an adapter dump has run out
7381 * of processing time.
7382 *
7383 * Return value:
7384 * IPR_RC_JOB_CONTINUE
7385 **/
7386 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7387 {
7388 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7389
7390 if (ioa_cfg->sdt_state == GET_DUMP)
7391 ioa_cfg->sdt_state = ABORT_DUMP;
7392
7393 ipr_cmd->job_step = ipr_reset_alert;
7394
7395 return IPR_RC_JOB_CONTINUE;
7396 }
7397
7398 /**
7399 * ipr_unit_check_no_data - Log a unit check/no data error log
7400 * @ioa_cfg: ioa config struct
7401 *
7402 * Logs an error indicating the adapter unit checked, but for some
7403 * reason, we were unable to fetch the unit check buffer.
7404 *
7405 * Return value:
7406 * nothing
7407 **/
7408 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7409 {
7410 ioa_cfg->errors_logged++;
7411 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7412 }
7413
7414 /**
7415 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7416 * @ioa_cfg: ioa config struct
7417 *
7418 * Fetches the unit check buffer from the adapter by clocking the data
7419 * through the mailbox register.
7420 *
7421 * Return value:
7422 * nothing
7423 **/
7424 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7425 {
7426 unsigned long mailbox;
7427 struct ipr_hostrcb *hostrcb;
7428 struct ipr_uc_sdt sdt;
7429 int rc, length;
7430 u32 ioasc;
7431
7432 mailbox = readl(ioa_cfg->ioa_mailbox);
7433
7434 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
7435 ipr_unit_check_no_data(ioa_cfg);
7436 return;
7437 }
7438
7439 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7440 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7441 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7442
7443 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7444 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7445 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
7446 ipr_unit_check_no_data(ioa_cfg);
7447 return;
7448 }
7449
7450 /* Find length of the first sdt entry (UC buffer) */
7451 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7452 length = be32_to_cpu(sdt.entry[0].end_token);
7453 else
7454 length = (be32_to_cpu(sdt.entry[0].end_token) -
7455 be32_to_cpu(sdt.entry[0].start_token)) &
7456 IPR_FMT2_MBX_ADDR_MASK;
7457
7458 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7459 struct ipr_hostrcb, queue);
7460 list_del(&hostrcb->queue);
7461 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7462
7463 rc = ipr_get_ldump_data_section(ioa_cfg,
7464 be32_to_cpu(sdt.entry[0].start_token),
7465 (__be32 *)&hostrcb->hcam,
7466 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7467
7468 if (!rc) {
7469 ipr_handle_log_data(ioa_cfg, hostrcb);
7470 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
7471 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7472 ioa_cfg->sdt_state == GET_DUMP)
7473 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7474 } else
7475 ipr_unit_check_no_data(ioa_cfg);
7476
7477 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7478 }
7479
7480 /**
7481 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
7482 * @ipr_cmd: ipr command struct
7483 *
7484 * Description: This function will call to get the unit check buffer.
7485 *
7486 * Return value:
7487 * IPR_RC_JOB_RETURN
7488 **/
7489 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
7490 {
7491 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7492
7493 ENTER;
7494 ioa_cfg->ioa_unit_checked = 0;
7495 ipr_get_unit_check_buffer(ioa_cfg);
7496 ipr_cmd->job_step = ipr_reset_alert;
7497 ipr_reset_start_timer(ipr_cmd, 0);
7498
7499 LEAVE;
7500 return IPR_RC_JOB_RETURN;
7501 }
7502
7503 /**
7504 * ipr_reset_restore_cfg_space - Restore PCI config space.
7505 * @ipr_cmd: ipr command struct
7506 *
7507 * Description: This function restores the saved PCI config space of
7508 * the adapter, fails all outstanding ops back to the callers, and
7509 * fetches the dump/unit check if applicable to this reset.
7510 *
7511 * Return value:
7512 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7513 **/
7514 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
7515 {
7516 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7517 volatile u32 int_reg;
7518
7519 ENTER;
7520 ioa_cfg->pdev->state_saved = true;
7521 pci_restore_state(ioa_cfg->pdev);
7522
7523 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
7524 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7525 return IPR_RC_JOB_CONTINUE;
7526 }
7527
7528 ipr_fail_all_ops(ioa_cfg);
7529
7530 if (ioa_cfg->sis64) {
7531 /* Set the adapter to the correct endian mode. */
7532 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7533 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7534 }
7535
7536 if (ioa_cfg->ioa_unit_checked) {
7537 if (ioa_cfg->sis64) {
7538 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
7539 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
7540 return IPR_RC_JOB_RETURN;
7541 } else {
7542 ioa_cfg->ioa_unit_checked = 0;
7543 ipr_get_unit_check_buffer(ioa_cfg);
7544 ipr_cmd->job_step = ipr_reset_alert;
7545 ipr_reset_start_timer(ipr_cmd, 0);
7546 return IPR_RC_JOB_RETURN;
7547 }
7548 }
7549
7550 if (ioa_cfg->in_ioa_bringdown) {
7551 ipr_cmd->job_step = ipr_ioa_bringdown_done;
7552 } else {
7553 ipr_cmd->job_step = ipr_reset_enable_ioa;
7554
7555 if (GET_DUMP == ioa_cfg->sdt_state) {
7556 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
7557 ipr_cmd->job_step = ipr_reset_wait_for_dump;
7558 schedule_work(&ioa_cfg->work_q);
7559 return IPR_RC_JOB_RETURN;
7560 }
7561 }
7562
7563 LEAVE;
7564 return IPR_RC_JOB_CONTINUE;
7565 }
7566
7567 /**
7568 * ipr_reset_bist_done - BIST has completed on the adapter.
7569 * @ipr_cmd: ipr command struct
7570 *
7571 * Description: Unblock config space and resume the reset process.
7572 *
7573 * Return value:
7574 * IPR_RC_JOB_CONTINUE
7575 **/
7576 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
7577 {
7578 ENTER;
7579 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7580 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
7581 LEAVE;
7582 return IPR_RC_JOB_CONTINUE;
7583 }
7584
7585 /**
7586 * ipr_reset_start_bist - Run BIST on the adapter.
7587 * @ipr_cmd: ipr command struct
7588 *
7589 * Description: This function runs BIST on the adapter, then delays 2 seconds.
7590 *
7591 * Return value:
7592 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7593 **/
7594 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
7595 {
7596 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7597 int rc = PCIBIOS_SUCCESSFUL;
7598
7599 ENTER;
7600 pci_block_user_cfg_access(ioa_cfg->pdev);
7601
7602 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
7603 writel(IPR_UPROCI_SIS64_START_BIST,
7604 ioa_cfg->regs.set_uproc_interrupt_reg32);
7605 else
7606 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
7607
7608 if (rc == PCIBIOS_SUCCESSFUL) {
7609 ipr_cmd->job_step = ipr_reset_bist_done;
7610 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7611 rc = IPR_RC_JOB_RETURN;
7612 } else {
7613 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7614 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7615 rc = IPR_RC_JOB_CONTINUE;
7616 }
7617
7618 LEAVE;
7619 return rc;
7620 }
7621
7622 /**
7623 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
7624 * @ipr_cmd: ipr command struct
7625 *
7626 * Description: This clears PCI reset to the adapter and delays two seconds.
7627 *
7628 * Return value:
7629 * IPR_RC_JOB_RETURN
7630 **/
7631 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
7632 {
7633 ENTER;
7634 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
7635 ipr_cmd->job_step = ipr_reset_bist_done;
7636 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7637 LEAVE;
7638 return IPR_RC_JOB_RETURN;
7639 }
7640
7641 /**
7642 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
7643 * @ipr_cmd: ipr command struct
7644 *
7645 * Description: This asserts PCI reset to the adapter.
7646 *
7647 * Return value:
7648 * IPR_RC_JOB_RETURN
7649 **/
7650 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
7651 {
7652 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7653 struct pci_dev *pdev = ioa_cfg->pdev;
7654
7655 ENTER;
7656 pci_block_user_cfg_access(pdev);
7657 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
7658 ipr_cmd->job_step = ipr_reset_slot_reset_done;
7659 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
7660 LEAVE;
7661 return IPR_RC_JOB_RETURN;
7662 }
7663
7664 /**
7665 * ipr_reset_allowed - Query whether or not IOA can be reset
7666 * @ioa_cfg: ioa config struct
7667 *
7668 * Return value:
7669 * 0 if reset not allowed / non-zero if reset is allowed
7670 **/
7671 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
7672 {
7673 volatile u32 temp_reg;
7674
7675 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7676 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
7677 }
7678
7679 /**
7680 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
7681 * @ipr_cmd: ipr command struct
7682 *
7683 * Description: This function waits for adapter permission to run BIST,
7684 * then runs BIST. If the adapter does not give permission after a
7685 * reasonable time, we will reset the adapter anyway. The impact of
7686 * resetting the adapter without warning the adapter is the risk of
7687 * losing the persistent error log on the adapter. If the adapter is
7688 * reset while it is writing to the flash on the adapter, the flash
7689 * segment will have bad ECC and be zeroed.
7690 *
7691 * Return value:
7692 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7693 **/
7694 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
7695 {
7696 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7697 int rc = IPR_RC_JOB_RETURN;
7698
7699 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
7700 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7701 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7702 } else {
7703 ipr_cmd->job_step = ioa_cfg->reset;
7704 rc = IPR_RC_JOB_CONTINUE;
7705 }
7706
7707 return rc;
7708 }
7709
7710 /**
7711 * ipr_reset_alert - Alert the adapter of a pending reset
7712 * @ipr_cmd: ipr command struct
7713 *
7714 * Description: This function alerts the adapter that it will be reset.
7715 * If memory space is not currently enabled, proceed directly
7716 * to running BIST on the adapter. The timer must always be started
7717 * so we guarantee we do not run BIST from ipr_isr.
7718 *
7719 * Return value:
7720 * IPR_RC_JOB_RETURN
7721 **/
7722 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
7723 {
7724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7725 u16 cmd_reg;
7726 int rc;
7727
7728 ENTER;
7729 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
7730
7731 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
7732 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
7733 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
7734 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
7735 } else {
7736 ipr_cmd->job_step = ioa_cfg->reset;
7737 }
7738
7739 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7740 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7741
7742 LEAVE;
7743 return IPR_RC_JOB_RETURN;
7744 }
7745
7746 /**
7747 * ipr_reset_ucode_download_done - Microcode download completion
7748 * @ipr_cmd: ipr command struct
7749 *
7750 * Description: This function unmaps the microcode download buffer.
7751 *
7752 * Return value:
7753 * IPR_RC_JOB_CONTINUE
7754 **/
7755 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
7756 {
7757 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7758 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7759
7760 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
7761 sglist->num_sg, DMA_TO_DEVICE);
7762
7763 ipr_cmd->job_step = ipr_reset_alert;
7764 return IPR_RC_JOB_CONTINUE;
7765 }
7766
7767 /**
7768 * ipr_reset_ucode_download - Download microcode to the adapter
7769 * @ipr_cmd: ipr command struct
7770 *
7771 * Description: This function checks to see if it there is microcode
7772 * to download to the adapter. If there is, a download is performed.
7773 *
7774 * Return value:
7775 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7776 **/
7777 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
7778 {
7779 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7780 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7781
7782 ENTER;
7783 ipr_cmd->job_step = ipr_reset_alert;
7784
7785 if (!sglist)
7786 return IPR_RC_JOB_CONTINUE;
7787
7788 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7789 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7790 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
7791 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
7792 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
7793 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
7794 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
7795
7796 if (ioa_cfg->sis64)
7797 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
7798 else
7799 ipr_build_ucode_ioadl(ipr_cmd, sglist);
7800 ipr_cmd->job_step = ipr_reset_ucode_download_done;
7801
7802 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7803 IPR_WRITE_BUFFER_TIMEOUT);
7804
7805 LEAVE;
7806 return IPR_RC_JOB_RETURN;
7807 }
7808
7809 /**
7810 * ipr_reset_shutdown_ioa - Shutdown the adapter
7811 * @ipr_cmd: ipr command struct
7812 *
7813 * Description: This function issues an adapter shutdown of the
7814 * specified type to the specified adapter as part of the
7815 * adapter reset job.
7816 *
7817 * Return value:
7818 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7819 **/
7820 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
7821 {
7822 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7823 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
7824 unsigned long timeout;
7825 int rc = IPR_RC_JOB_CONTINUE;
7826
7827 ENTER;
7828 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
7829 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7830 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7831 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
7832 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
7833
7834 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
7835 timeout = IPR_SHUTDOWN_TIMEOUT;
7836 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
7837 timeout = IPR_INTERNAL_TIMEOUT;
7838 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7839 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
7840 else
7841 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
7842
7843 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
7844
7845 rc = IPR_RC_JOB_RETURN;
7846 ipr_cmd->job_step = ipr_reset_ucode_download;
7847 } else
7848 ipr_cmd->job_step = ipr_reset_alert;
7849
7850 LEAVE;
7851 return rc;
7852 }
7853
7854 /**
7855 * ipr_reset_ioa_job - Adapter reset job
7856 * @ipr_cmd: ipr command struct
7857 *
7858 * Description: This function is the job router for the adapter reset job.
7859 *
7860 * Return value:
7861 * none
7862 **/
7863 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
7864 {
7865 u32 rc, ioasc;
7866 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7867
7868 do {
7869 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7870
7871 if (ioa_cfg->reset_cmd != ipr_cmd) {
7872 /*
7873 * We are doing nested adapter resets and this is
7874 * not the current reset job.
7875 */
7876 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7877 return;
7878 }
7879
7880 if (IPR_IOASC_SENSE_KEY(ioasc)) {
7881 rc = ipr_cmd->job_step_failed(ipr_cmd);
7882 if (rc == IPR_RC_JOB_RETURN)
7883 return;
7884 }
7885
7886 ipr_reinit_ipr_cmnd(ipr_cmd);
7887 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
7888 rc = ipr_cmd->job_step(ipr_cmd);
7889 } while(rc == IPR_RC_JOB_CONTINUE);
7890 }
7891
7892 /**
7893 * _ipr_initiate_ioa_reset - Initiate an adapter reset
7894 * @ioa_cfg: ioa config struct
7895 * @job_step: first job step of reset job
7896 * @shutdown_type: shutdown type
7897 *
7898 * Description: This function will initiate the reset of the given adapter
7899 * starting at the selected job step.
7900 * If the caller needs to wait on the completion of the reset,
7901 * the caller must sleep on the reset_wait_q.
7902 *
7903 * Return value:
7904 * none
7905 **/
7906 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7907 int (*job_step) (struct ipr_cmnd *),
7908 enum ipr_shutdown_type shutdown_type)
7909 {
7910 struct ipr_cmnd *ipr_cmd;
7911
7912 ioa_cfg->in_reset_reload = 1;
7913 ioa_cfg->allow_cmds = 0;
7914 scsi_block_requests(ioa_cfg->host);
7915
7916 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
7917 ioa_cfg->reset_cmd = ipr_cmd;
7918 ipr_cmd->job_step = job_step;
7919 ipr_cmd->u.shutdown_type = shutdown_type;
7920
7921 ipr_reset_ioa_job(ipr_cmd);
7922 }
7923
7924 /**
7925 * ipr_initiate_ioa_reset - Initiate an adapter reset
7926 * @ioa_cfg: ioa config struct
7927 * @shutdown_type: shutdown type
7928 *
7929 * Description: This function will initiate the reset of the given adapter.
7930 * If the caller needs to wait on the completion of the reset,
7931 * the caller must sleep on the reset_wait_q.
7932 *
7933 * Return value:
7934 * none
7935 **/
7936 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7937 enum ipr_shutdown_type shutdown_type)
7938 {
7939 if (ioa_cfg->ioa_is_dead)
7940 return;
7941
7942 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
7943 ioa_cfg->sdt_state = ABORT_DUMP;
7944
7945 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
7946 dev_err(&ioa_cfg->pdev->dev,
7947 "IOA taken offline - error recovery failed\n");
7948
7949 ioa_cfg->reset_retries = 0;
7950 ioa_cfg->ioa_is_dead = 1;
7951
7952 if (ioa_cfg->in_ioa_bringdown) {
7953 ioa_cfg->reset_cmd = NULL;
7954 ioa_cfg->in_reset_reload = 0;
7955 ipr_fail_all_ops(ioa_cfg);
7956 wake_up_all(&ioa_cfg->reset_wait_q);
7957
7958 spin_unlock_irq(ioa_cfg->host->host_lock);
7959 scsi_unblock_requests(ioa_cfg->host);
7960 spin_lock_irq(ioa_cfg->host->host_lock);
7961 return;
7962 } else {
7963 ioa_cfg->in_ioa_bringdown = 1;
7964 shutdown_type = IPR_SHUTDOWN_NONE;
7965 }
7966 }
7967
7968 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
7969 shutdown_type);
7970 }
7971
7972 /**
7973 * ipr_reset_freeze - Hold off all I/O activity
7974 * @ipr_cmd: ipr command struct
7975 *
7976 * Description: If the PCI slot is frozen, hold off all I/O
7977 * activity; then, as soon as the slot is available again,
7978 * initiate an adapter reset.
7979 */
7980 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
7981 {
7982 /* Disallow new interrupts, avoid loop */
7983 ipr_cmd->ioa_cfg->allow_interrupts = 0;
7984 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7985 ipr_cmd->done = ipr_reset_ioa_job;
7986 return IPR_RC_JOB_RETURN;
7987 }
7988
7989 /**
7990 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
7991 * @pdev: PCI device struct
7992 *
7993 * Description: This routine is called to tell us that the PCI bus
7994 * is down. Can't do anything here, except put the device driver
7995 * into a holding pattern, waiting for the PCI bus to come back.
7996 */
7997 static void ipr_pci_frozen(struct pci_dev *pdev)
7998 {
7999 unsigned long flags = 0;
8000 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8001
8002 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8003 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
8004 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8005 }
8006
8007 /**
8008 * ipr_pci_slot_reset - Called when PCI slot has been reset.
8009 * @pdev: PCI device struct
8010 *
8011 * Description: This routine is called by the pci error recovery
8012 * code after the PCI slot has been reset, just before we
8013 * should resume normal operations.
8014 */
8015 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
8016 {
8017 unsigned long flags = 0;
8018 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8019
8020 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8021 if (ioa_cfg->needs_warm_reset)
8022 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8023 else
8024 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
8025 IPR_SHUTDOWN_NONE);
8026 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8027 return PCI_ERS_RESULT_RECOVERED;
8028 }
8029
8030 /**
8031 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
8032 * @pdev: PCI device struct
8033 *
8034 * Description: This routine is called when the PCI bus has
8035 * permanently failed.
8036 */
8037 static void ipr_pci_perm_failure(struct pci_dev *pdev)
8038 {
8039 unsigned long flags = 0;
8040 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8041
8042 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8043 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8044 ioa_cfg->sdt_state = ABORT_DUMP;
8045 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
8046 ioa_cfg->in_ioa_bringdown = 1;
8047 ioa_cfg->allow_cmds = 0;
8048 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8049 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8050 }
8051
8052 /**
8053 * ipr_pci_error_detected - Called when a PCI error is detected.
8054 * @pdev: PCI device struct
8055 * @state: PCI channel state
8056 *
8057 * Description: Called when a PCI error is detected.
8058 *
8059 * Return value:
8060 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8061 */
8062 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
8063 pci_channel_state_t state)
8064 {
8065 switch (state) {
8066 case pci_channel_io_frozen:
8067 ipr_pci_frozen(pdev);
8068 return PCI_ERS_RESULT_NEED_RESET;
8069 case pci_channel_io_perm_failure:
8070 ipr_pci_perm_failure(pdev);
8071 return PCI_ERS_RESULT_DISCONNECT;
8072 break;
8073 default:
8074 break;
8075 }
8076 return PCI_ERS_RESULT_NEED_RESET;
8077 }
8078
8079 /**
8080 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8081 * @ioa_cfg: ioa cfg struct
8082 *
8083 * Description: This is the second phase of adapter intialization
8084 * This function takes care of initilizing the adapter to the point
8085 * where it can accept new commands.
8086
8087 * Return value:
8088 * 0 on success / -EIO on failure
8089 **/
8090 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8091 {
8092 int rc = 0;
8093 unsigned long host_lock_flags = 0;
8094
8095 ENTER;
8096 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8097 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
8098 if (ioa_cfg->needs_hard_reset) {
8099 ioa_cfg->needs_hard_reset = 0;
8100 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8101 } else
8102 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8103 IPR_SHUTDOWN_NONE);
8104
8105 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8106 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8107 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8108
8109 if (ioa_cfg->ioa_is_dead) {
8110 rc = -EIO;
8111 } else if (ipr_invalid_adapter(ioa_cfg)) {
8112 if (!ipr_testmode)
8113 rc = -EIO;
8114
8115 dev_err(&ioa_cfg->pdev->dev,
8116 "Adapter not supported in this hardware configuration.\n");
8117 }
8118
8119 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8120
8121 LEAVE;
8122 return rc;
8123 }
8124
8125 /**
8126 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8127 * @ioa_cfg: ioa config struct
8128 *
8129 * Return value:
8130 * none
8131 **/
8132 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8133 {
8134 int i;
8135
8136 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8137 if (ioa_cfg->ipr_cmnd_list[i])
8138 pci_pool_free(ioa_cfg->ipr_cmd_pool,
8139 ioa_cfg->ipr_cmnd_list[i],
8140 ioa_cfg->ipr_cmnd_list_dma[i]);
8141
8142 ioa_cfg->ipr_cmnd_list[i] = NULL;
8143 }
8144
8145 if (ioa_cfg->ipr_cmd_pool)
8146 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
8147
8148 ioa_cfg->ipr_cmd_pool = NULL;
8149 }
8150
8151 /**
8152 * ipr_free_mem - Frees memory allocated for an adapter
8153 * @ioa_cfg: ioa cfg struct
8154 *
8155 * Return value:
8156 * nothing
8157 **/
8158 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8159 {
8160 int i;
8161
8162 kfree(ioa_cfg->res_entries);
8163 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
8164 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8165 ipr_free_cmd_blks(ioa_cfg);
8166 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8167 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8168 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
8169 ioa_cfg->u.cfg_table,
8170 ioa_cfg->cfg_table_dma);
8171
8172 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8173 pci_free_consistent(ioa_cfg->pdev,
8174 sizeof(struct ipr_hostrcb),
8175 ioa_cfg->hostrcb[i],
8176 ioa_cfg->hostrcb_dma[i]);
8177 }
8178
8179 ipr_free_dump(ioa_cfg);
8180 kfree(ioa_cfg->trace);
8181 }
8182
8183 /**
8184 * ipr_free_all_resources - Free all allocated resources for an adapter.
8185 * @ipr_cmd: ipr command struct
8186 *
8187 * This function frees all allocated resources for the
8188 * specified adapter.
8189 *
8190 * Return value:
8191 * none
8192 **/
8193 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8194 {
8195 struct pci_dev *pdev = ioa_cfg->pdev;
8196
8197 ENTER;
8198 free_irq(pdev->irq, ioa_cfg);
8199 pci_disable_msi(pdev);
8200 iounmap(ioa_cfg->hdw_dma_regs);
8201 pci_release_regions(pdev);
8202 ipr_free_mem(ioa_cfg);
8203 scsi_host_put(ioa_cfg->host);
8204 pci_disable_device(pdev);
8205 LEAVE;
8206 }
8207
8208 /**
8209 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8210 * @ioa_cfg: ioa config struct
8211 *
8212 * Return value:
8213 * 0 on success / -ENOMEM on allocation failure
8214 **/
8215 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8216 {
8217 struct ipr_cmnd *ipr_cmd;
8218 struct ipr_ioarcb *ioarcb;
8219 dma_addr_t dma_addr;
8220 int i;
8221
8222 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
8223 sizeof(struct ipr_cmnd), 16, 0);
8224
8225 if (!ioa_cfg->ipr_cmd_pool)
8226 return -ENOMEM;
8227
8228 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8229 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
8230
8231 if (!ipr_cmd) {
8232 ipr_free_cmd_blks(ioa_cfg);
8233 return -ENOMEM;
8234 }
8235
8236 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
8237 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8238 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8239
8240 ioarcb = &ipr_cmd->ioarcb;
8241 ipr_cmd->dma_addr = dma_addr;
8242 if (ioa_cfg->sis64)
8243 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8244 else
8245 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8246
8247 ioarcb->host_response_handle = cpu_to_be32(i << 2);
8248 if (ioa_cfg->sis64) {
8249 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8250 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8251 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
8252 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
8253 } else {
8254 ioarcb->write_ioadl_addr =
8255 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8256 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8257 ioarcb->ioasa_host_pci_addr =
8258 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
8259 }
8260 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8261 ipr_cmd->cmd_index = i;
8262 ipr_cmd->ioa_cfg = ioa_cfg;
8263 ipr_cmd->sense_buffer_dma = dma_addr +
8264 offsetof(struct ipr_cmnd, sense_buffer);
8265
8266 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8267 }
8268
8269 return 0;
8270 }
8271
8272 /**
8273 * ipr_alloc_mem - Allocate memory for an adapter
8274 * @ioa_cfg: ioa config struct
8275 *
8276 * Return value:
8277 * 0 on success / non-zero for error
8278 **/
8279 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8280 {
8281 struct pci_dev *pdev = ioa_cfg->pdev;
8282 int i, rc = -ENOMEM;
8283
8284 ENTER;
8285 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
8286 ioa_cfg->max_devs_supported, GFP_KERNEL);
8287
8288 if (!ioa_cfg->res_entries)
8289 goto out;
8290
8291 if (ioa_cfg->sis64) {
8292 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
8293 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8294 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
8295 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8296 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
8297 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8298 }
8299
8300 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
8301 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
8302 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8303 }
8304
8305 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
8306 sizeof(struct ipr_misc_cbs),
8307 &ioa_cfg->vpd_cbs_dma);
8308
8309 if (!ioa_cfg->vpd_cbs)
8310 goto out_free_res_entries;
8311
8312 if (ipr_alloc_cmd_blks(ioa_cfg))
8313 goto out_free_vpd_cbs;
8314
8315 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
8316 sizeof(u32) * IPR_NUM_CMD_BLKS,
8317 &ioa_cfg->host_rrq_dma);
8318
8319 if (!ioa_cfg->host_rrq)
8320 goto out_ipr_free_cmd_blocks;
8321
8322 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
8323 ioa_cfg->cfg_table_size,
8324 &ioa_cfg->cfg_table_dma);
8325
8326 if (!ioa_cfg->u.cfg_table)
8327 goto out_free_host_rrq;
8328
8329 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8330 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
8331 sizeof(struct ipr_hostrcb),
8332 &ioa_cfg->hostrcb_dma[i]);
8333
8334 if (!ioa_cfg->hostrcb[i])
8335 goto out_free_hostrcb_dma;
8336
8337 ioa_cfg->hostrcb[i]->hostrcb_dma =
8338 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
8339 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
8340 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
8341 }
8342
8343 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
8344 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
8345
8346 if (!ioa_cfg->trace)
8347 goto out_free_hostrcb_dma;
8348
8349 rc = 0;
8350 out:
8351 LEAVE;
8352 return rc;
8353
8354 out_free_hostrcb_dma:
8355 while (i-- > 0) {
8356 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
8357 ioa_cfg->hostrcb[i],
8358 ioa_cfg->hostrcb_dma[i]);
8359 }
8360 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
8361 ioa_cfg->u.cfg_table,
8362 ioa_cfg->cfg_table_dma);
8363 out_free_host_rrq:
8364 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8365 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8366 out_ipr_free_cmd_blocks:
8367 ipr_free_cmd_blks(ioa_cfg);
8368 out_free_vpd_cbs:
8369 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
8370 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8371 out_free_res_entries:
8372 kfree(ioa_cfg->res_entries);
8373 goto out;
8374 }
8375
8376 /**
8377 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
8378 * @ioa_cfg: ioa config struct
8379 *
8380 * Return value:
8381 * none
8382 **/
8383 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
8384 {
8385 int i;
8386
8387 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
8388 ioa_cfg->bus_attr[i].bus = i;
8389 ioa_cfg->bus_attr[i].qas_enabled = 0;
8390 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
8391 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
8392 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
8393 else
8394 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
8395 }
8396 }
8397
8398 /**
8399 * ipr_init_ioa_cfg - Initialize IOA config struct
8400 * @ioa_cfg: ioa config struct
8401 * @host: scsi host struct
8402 * @pdev: PCI dev struct
8403 *
8404 * Return value:
8405 * none
8406 **/
8407 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
8408 struct Scsi_Host *host, struct pci_dev *pdev)
8409 {
8410 const struct ipr_interrupt_offsets *p;
8411 struct ipr_interrupts *t;
8412 void __iomem *base;
8413
8414 ioa_cfg->host = host;
8415 ioa_cfg->pdev = pdev;
8416 ioa_cfg->log_level = ipr_log_level;
8417 ioa_cfg->doorbell = IPR_DOORBELL;
8418 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
8419 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
8420 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
8421 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
8422 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
8423 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
8424 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
8425 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
8426
8427 INIT_LIST_HEAD(&ioa_cfg->free_q);
8428 INIT_LIST_HEAD(&ioa_cfg->pending_q);
8429 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
8430 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
8431 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
8432 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
8433 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
8434 init_waitqueue_head(&ioa_cfg->reset_wait_q);
8435 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8436 ioa_cfg->sdt_state = INACTIVE;
8437
8438 ipr_initialize_bus_attr(ioa_cfg);
8439 ioa_cfg->max_devs_supported = ipr_max_devs;
8440
8441 if (ioa_cfg->sis64) {
8442 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
8443 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
8444 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
8445 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
8446 } else {
8447 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
8448 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
8449 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
8450 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
8451 }
8452 host->max_channel = IPR_MAX_BUS_TO_SCAN;
8453 host->unique_id = host->host_no;
8454 host->max_cmd_len = IPR_MAX_CDB_LEN;
8455 pci_set_drvdata(pdev, ioa_cfg);
8456
8457 p = &ioa_cfg->chip_cfg->regs;
8458 t = &ioa_cfg->regs;
8459 base = ioa_cfg->hdw_dma_regs;
8460
8461 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
8462 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
8463 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
8464 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
8465 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
8466 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
8467 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
8468 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
8469 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
8470 t->ioarrin_reg = base + p->ioarrin_reg;
8471 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
8472 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
8473 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
8474 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
8475 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
8476 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
8477
8478 if (ioa_cfg->sis64) {
8479 t->init_feedback_reg = base + p->init_feedback_reg;
8480 t->dump_addr_reg = base + p->dump_addr_reg;
8481 t->dump_data_reg = base + p->dump_data_reg;
8482 t->endian_swap_reg = base + p->endian_swap_reg;
8483 }
8484 }
8485
8486 /**
8487 * ipr_get_chip_info - Find adapter chip information
8488 * @dev_id: PCI device id struct
8489 *
8490 * Return value:
8491 * ptr to chip information on success / NULL on failure
8492 **/
8493 static const struct ipr_chip_t * __devinit
8494 ipr_get_chip_info(const struct pci_device_id *dev_id)
8495 {
8496 int i;
8497
8498 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
8499 if (ipr_chip[i].vendor == dev_id->vendor &&
8500 ipr_chip[i].device == dev_id->device)
8501 return &ipr_chip[i];
8502 return NULL;
8503 }
8504
8505 /**
8506 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
8507 * @pdev: PCI device struct
8508 *
8509 * Description: Simply set the msi_received flag to 1 indicating that
8510 * Message Signaled Interrupts are supported.
8511 *
8512 * Return value:
8513 * 0 on success / non-zero on failure
8514 **/
8515 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
8516 {
8517 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
8518 unsigned long lock_flags = 0;
8519 irqreturn_t rc = IRQ_HANDLED;
8520
8521 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8522
8523 ioa_cfg->msi_received = 1;
8524 wake_up(&ioa_cfg->msi_wait_q);
8525
8526 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8527 return rc;
8528 }
8529
8530 /**
8531 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
8532 * @pdev: PCI device struct
8533 *
8534 * Description: The return value from pci_enable_msi() can not always be
8535 * trusted. This routine sets up and initiates a test interrupt to determine
8536 * if the interrupt is received via the ipr_test_intr() service routine.
8537 * If the tests fails, the driver will fall back to LSI.
8538 *
8539 * Return value:
8540 * 0 on success / non-zero on failure
8541 **/
8542 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
8543 struct pci_dev *pdev)
8544 {
8545 int rc;
8546 volatile u32 int_reg;
8547 unsigned long lock_flags = 0;
8548
8549 ENTER;
8550
8551 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8552 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8553 ioa_cfg->msi_received = 0;
8554 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8555 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
8556 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8557 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8558
8559 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
8560 if (rc) {
8561 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
8562 return rc;
8563 } else if (ipr_debug)
8564 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
8565
8566 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
8567 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8568 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
8569 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8570
8571 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8572 if (!ioa_cfg->msi_received) {
8573 /* MSI test failed */
8574 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
8575 rc = -EOPNOTSUPP;
8576 } else if (ipr_debug)
8577 dev_info(&pdev->dev, "MSI test succeeded.\n");
8578
8579 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8580
8581 free_irq(pdev->irq, ioa_cfg);
8582
8583 LEAVE;
8584
8585 return rc;
8586 }
8587
8588 /**
8589 * ipr_probe_ioa - Allocates memory and does first stage of initialization
8590 * @pdev: PCI device struct
8591 * @dev_id: PCI device id struct
8592 *
8593 * Return value:
8594 * 0 on success / non-zero on failure
8595 **/
8596 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
8597 const struct pci_device_id *dev_id)
8598 {
8599 struct ipr_ioa_cfg *ioa_cfg;
8600 struct Scsi_Host *host;
8601 unsigned long ipr_regs_pci;
8602 void __iomem *ipr_regs;
8603 int rc = PCIBIOS_SUCCESSFUL;
8604 volatile u32 mask, uproc, interrupts;
8605
8606 ENTER;
8607
8608 if ((rc = pci_enable_device(pdev))) {
8609 dev_err(&pdev->dev, "Cannot enable adapter\n");
8610 goto out;
8611 }
8612
8613 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
8614
8615 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
8616
8617 if (!host) {
8618 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
8619 rc = -ENOMEM;
8620 goto out_disable;
8621 }
8622
8623 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
8624 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
8625 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
8626 sata_port_info.flags, &ipr_sata_ops);
8627
8628 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
8629
8630 if (!ioa_cfg->ipr_chip) {
8631 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
8632 dev_id->vendor, dev_id->device);
8633 goto out_scsi_host_put;
8634 }
8635
8636 /* set SIS 32 or SIS 64 */
8637 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
8638 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
8639
8640 if (ipr_transop_timeout)
8641 ioa_cfg->transop_timeout = ipr_transop_timeout;
8642 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
8643 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
8644 else
8645 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
8646
8647 ioa_cfg->revid = pdev->revision;
8648
8649 ipr_regs_pci = pci_resource_start(pdev, 0);
8650
8651 rc = pci_request_regions(pdev, IPR_NAME);
8652 if (rc < 0) {
8653 dev_err(&pdev->dev,
8654 "Couldn't register memory range of registers\n");
8655 goto out_scsi_host_put;
8656 }
8657
8658 ipr_regs = pci_ioremap_bar(pdev, 0);
8659
8660 if (!ipr_regs) {
8661 dev_err(&pdev->dev,
8662 "Couldn't map memory range of registers\n");
8663 rc = -ENOMEM;
8664 goto out_release_regions;
8665 }
8666
8667 ioa_cfg->hdw_dma_regs = ipr_regs;
8668 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
8669 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
8670
8671 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
8672
8673 pci_set_master(pdev);
8674
8675 if (ioa_cfg->sis64) {
8676 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8677 if (rc < 0) {
8678 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
8679 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8680 }
8681
8682 } else
8683 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8684
8685 if (rc < 0) {
8686 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
8687 goto cleanup_nomem;
8688 }
8689
8690 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
8691 ioa_cfg->chip_cfg->cache_line_size);
8692
8693 if (rc != PCIBIOS_SUCCESSFUL) {
8694 dev_err(&pdev->dev, "Write of cache line size failed\n");
8695 rc = -EIO;
8696 goto cleanup_nomem;
8697 }
8698
8699 /* Enable MSI style interrupts if they are supported. */
8700 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
8701 rc = ipr_test_msi(ioa_cfg, pdev);
8702 if (rc == -EOPNOTSUPP)
8703 pci_disable_msi(pdev);
8704 else if (rc)
8705 goto out_msi_disable;
8706 else
8707 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
8708 } else if (ipr_debug)
8709 dev_info(&pdev->dev, "Cannot enable MSI.\n");
8710
8711 /* Save away PCI config space for use following IOA reset */
8712 rc = pci_save_state(pdev);
8713
8714 if (rc != PCIBIOS_SUCCESSFUL) {
8715 dev_err(&pdev->dev, "Failed to save PCI config space\n");
8716 rc = -EIO;
8717 goto cleanup_nomem;
8718 }
8719
8720 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
8721 goto cleanup_nomem;
8722
8723 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
8724 goto cleanup_nomem;
8725
8726 if (ioa_cfg->sis64)
8727 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
8728 + ((sizeof(struct ipr_config_table_entry64)
8729 * ioa_cfg->max_devs_supported)));
8730 else
8731 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
8732 + ((sizeof(struct ipr_config_table_entry)
8733 * ioa_cfg->max_devs_supported)));
8734
8735 rc = ipr_alloc_mem(ioa_cfg);
8736 if (rc < 0) {
8737 dev_err(&pdev->dev,
8738 "Couldn't allocate enough memory for device driver!\n");
8739 goto cleanup_nomem;
8740 }
8741
8742 /*
8743 * If HRRQ updated interrupt is not masked, or reset alert is set,
8744 * the card is in an unknown state and needs a hard reset
8745 */
8746 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
8747 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
8748 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
8749 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
8750 ioa_cfg->needs_hard_reset = 1;
8751 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
8752 ioa_cfg->needs_hard_reset = 1;
8753 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
8754 ioa_cfg->ioa_unit_checked = 1;
8755
8756 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8757 rc = request_irq(pdev->irq, ipr_isr,
8758 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
8759 IPR_NAME, ioa_cfg);
8760
8761 if (rc) {
8762 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
8763 pdev->irq, rc);
8764 goto cleanup_nolog;
8765 }
8766
8767 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
8768 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
8769 ioa_cfg->needs_warm_reset = 1;
8770 ioa_cfg->reset = ipr_reset_slot_reset;
8771 } else
8772 ioa_cfg->reset = ipr_reset_start_bist;
8773
8774 spin_lock(&ipr_driver_lock);
8775 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
8776 spin_unlock(&ipr_driver_lock);
8777
8778 LEAVE;
8779 out:
8780 return rc;
8781
8782 cleanup_nolog:
8783 ipr_free_mem(ioa_cfg);
8784 cleanup_nomem:
8785 iounmap(ipr_regs);
8786 out_msi_disable:
8787 pci_disable_msi(pdev);
8788 out_release_regions:
8789 pci_release_regions(pdev);
8790 out_scsi_host_put:
8791 scsi_host_put(host);
8792 out_disable:
8793 pci_disable_device(pdev);
8794 goto out;
8795 }
8796
8797 /**
8798 * ipr_scan_vsets - Scans for VSET devices
8799 * @ioa_cfg: ioa config struct
8800 *
8801 * Description: Since the VSET resources do not follow SAM in that we can have
8802 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
8803 *
8804 * Return value:
8805 * none
8806 **/
8807 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
8808 {
8809 int target, lun;
8810
8811 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
8812 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
8813 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
8814 }
8815
8816 /**
8817 * ipr_initiate_ioa_bringdown - Bring down an adapter
8818 * @ioa_cfg: ioa config struct
8819 * @shutdown_type: shutdown type
8820 *
8821 * Description: This function will initiate bringing down the adapter.
8822 * This consists of issuing an IOA shutdown to the adapter
8823 * to flush the cache, and running BIST.
8824 * If the caller needs to wait on the completion of the reset,
8825 * the caller must sleep on the reset_wait_q.
8826 *
8827 * Return value:
8828 * none
8829 **/
8830 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
8831 enum ipr_shutdown_type shutdown_type)
8832 {
8833 ENTER;
8834 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8835 ioa_cfg->sdt_state = ABORT_DUMP;
8836 ioa_cfg->reset_retries = 0;
8837 ioa_cfg->in_ioa_bringdown = 1;
8838 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
8839 LEAVE;
8840 }
8841
8842 /**
8843 * __ipr_remove - Remove a single adapter
8844 * @pdev: pci device struct
8845 *
8846 * Adapter hot plug remove entry point.
8847 *
8848 * Return value:
8849 * none
8850 **/
8851 static void __ipr_remove(struct pci_dev *pdev)
8852 {
8853 unsigned long host_lock_flags = 0;
8854 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8855 ENTER;
8856
8857 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8858 while(ioa_cfg->in_reset_reload) {
8859 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8860 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8861 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8862 }
8863
8864 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8865
8866 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8867 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8868 flush_scheduled_work();
8869 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8870
8871 spin_lock(&ipr_driver_lock);
8872 list_del(&ioa_cfg->queue);
8873 spin_unlock(&ipr_driver_lock);
8874
8875 if (ioa_cfg->sdt_state == ABORT_DUMP)
8876 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8877 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8878
8879 ipr_free_all_resources(ioa_cfg);
8880
8881 LEAVE;
8882 }
8883
8884 /**
8885 * ipr_remove - IOA hot plug remove entry point
8886 * @pdev: pci device struct
8887 *
8888 * Adapter hot plug remove entry point.
8889 *
8890 * Return value:
8891 * none
8892 **/
8893 static void __devexit ipr_remove(struct pci_dev *pdev)
8894 {
8895 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8896
8897 ENTER;
8898
8899 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
8900 &ipr_trace_attr);
8901 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
8902 &ipr_dump_attr);
8903 scsi_remove_host(ioa_cfg->host);
8904
8905 __ipr_remove(pdev);
8906
8907 LEAVE;
8908 }
8909
8910 /**
8911 * ipr_probe - Adapter hot plug add entry point
8912 *
8913 * Return value:
8914 * 0 on success / non-zero on failure
8915 **/
8916 static int __devinit ipr_probe(struct pci_dev *pdev,
8917 const struct pci_device_id *dev_id)
8918 {
8919 struct ipr_ioa_cfg *ioa_cfg;
8920 int rc;
8921
8922 rc = ipr_probe_ioa(pdev, dev_id);
8923
8924 if (rc)
8925 return rc;
8926
8927 ioa_cfg = pci_get_drvdata(pdev);
8928 rc = ipr_probe_ioa_part2(ioa_cfg);
8929
8930 if (rc) {
8931 __ipr_remove(pdev);
8932 return rc;
8933 }
8934
8935 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
8936
8937 if (rc) {
8938 __ipr_remove(pdev);
8939 return rc;
8940 }
8941
8942 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
8943 &ipr_trace_attr);
8944
8945 if (rc) {
8946 scsi_remove_host(ioa_cfg->host);
8947 __ipr_remove(pdev);
8948 return rc;
8949 }
8950
8951 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
8952 &ipr_dump_attr);
8953
8954 if (rc) {
8955 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
8956 &ipr_trace_attr);
8957 scsi_remove_host(ioa_cfg->host);
8958 __ipr_remove(pdev);
8959 return rc;
8960 }
8961
8962 scsi_scan_host(ioa_cfg->host);
8963 ipr_scan_vsets(ioa_cfg);
8964 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
8965 ioa_cfg->allow_ml_add_del = 1;
8966 ioa_cfg->host->max_channel = IPR_VSET_BUS;
8967 schedule_work(&ioa_cfg->work_q);
8968 return 0;
8969 }
8970
8971 /**
8972 * ipr_shutdown - Shutdown handler.
8973 * @pdev: pci device struct
8974 *
8975 * This function is invoked upon system shutdown/reboot. It will issue
8976 * an adapter shutdown to the adapter to flush the write cache.
8977 *
8978 * Return value:
8979 * none
8980 **/
8981 static void ipr_shutdown(struct pci_dev *pdev)
8982 {
8983 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8984 unsigned long lock_flags = 0;
8985
8986 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8987 while(ioa_cfg->in_reset_reload) {
8988 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8989 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8990 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8991 }
8992
8993 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8994 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8995 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8996 }
8997
8998 static struct pci_device_id ipr_pci_table[] __devinitdata = {
8999 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9000 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
9001 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9002 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
9003 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9004 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
9005 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9006 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
9007 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9008 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
9009 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9010 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
9011 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9012 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
9013 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9014 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
9015 IPR_USE_LONG_TRANSOP_TIMEOUT },
9016 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9017 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9018 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9019 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9020 IPR_USE_LONG_TRANSOP_TIMEOUT },
9021 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9022 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9023 IPR_USE_LONG_TRANSOP_TIMEOUT },
9024 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9025 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9026 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9027 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9028 IPR_USE_LONG_TRANSOP_TIMEOUT},
9029 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9030 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9031 IPR_USE_LONG_TRANSOP_TIMEOUT },
9032 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9033 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
9034 IPR_USE_LONG_TRANSOP_TIMEOUT },
9035 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9036 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
9037 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9038 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
9039 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9040 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
9041 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
9042 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
9043 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
9044 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9045 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
9046 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9047 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
9048 IPR_USE_LONG_TRANSOP_TIMEOUT },
9049 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9050 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
9051 IPR_USE_LONG_TRANSOP_TIMEOUT },
9052 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9053 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
9054 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9055 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
9056 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9057 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
9058 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9059 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
9060 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9061 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
9062 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9063 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
9064 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9065 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
9066 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9067 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 },
9068 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9069 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
9070 { }
9071 };
9072 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
9073
9074 static struct pci_error_handlers ipr_err_handler = {
9075 .error_detected = ipr_pci_error_detected,
9076 .slot_reset = ipr_pci_slot_reset,
9077 };
9078
9079 static struct pci_driver ipr_driver = {
9080 .name = IPR_NAME,
9081 .id_table = ipr_pci_table,
9082 .probe = ipr_probe,
9083 .remove = __devexit_p(ipr_remove),
9084 .shutdown = ipr_shutdown,
9085 .err_handler = &ipr_err_handler,
9086 };
9087
9088 /**
9089 * ipr_halt_done - Shutdown prepare completion
9090 *
9091 * Return value:
9092 * none
9093 **/
9094 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
9095 {
9096 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9097
9098 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
9099 }
9100
9101 /**
9102 * ipr_halt - Issue shutdown prepare to all adapters
9103 *
9104 * Return value:
9105 * NOTIFY_OK on success / NOTIFY_DONE on failure
9106 **/
9107 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
9108 {
9109 struct ipr_cmnd *ipr_cmd;
9110 struct ipr_ioa_cfg *ioa_cfg;
9111 unsigned long flags = 0;
9112
9113 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
9114 return NOTIFY_DONE;
9115
9116 spin_lock(&ipr_driver_lock);
9117
9118 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
9119 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9120 if (!ioa_cfg->allow_cmds) {
9121 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9122 continue;
9123 }
9124
9125 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9126 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9127 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9128 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9129 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
9130
9131 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
9132 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9133 }
9134 spin_unlock(&ipr_driver_lock);
9135
9136 return NOTIFY_OK;
9137 }
9138
9139 static struct notifier_block ipr_notifier = {
9140 ipr_halt, NULL, 0
9141 };
9142
9143 /**
9144 * ipr_init - Module entry point
9145 *
9146 * Return value:
9147 * 0 on success / negative value on failure
9148 **/
9149 static int __init ipr_init(void)
9150 {
9151 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
9152 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
9153
9154 register_reboot_notifier(&ipr_notifier);
9155 return pci_register_driver(&ipr_driver);
9156 }
9157
9158 /**
9159 * ipr_exit - Module unload
9160 *
9161 * Module unload entry point.
9162 *
9163 * Return value:
9164 * none
9165 **/
9166 static void __exit ipr_exit(void)
9167 {
9168 unregister_reboot_notifier(&ipr_notifier);
9169 pci_unregister_driver(&ipr_driver);
9170 }
9171
9172 module_init(ipr_init);
9173 module_exit(ipr_exit);
Linux kernel - Deliverables
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